The mass of water increases, the freezing point of water decreases. and the buoyancy of objects in the water increases may occur when the ocean sanity increases.
What is ocean sanity?Seawater is salty due to a variety of substances. The majority of them arrive via rivers, which bring chemicals dissolved from rock and soil. The most common is sodium chloride, also known as salt.
The most popular approach to quantify salinity is to count the amount of salt in 1,000 g of water, which is referred to as ppt. The majority of the ocean has a salinity of 34 to 36 parts per thousand.
Salinity makes water colder and denser by lowering its temperature. The chilly water sinks to the ocean's depths. Slow currents carry it throughout the marine basins.
Because the items have a lower density, they flow across the water's surface. As a result, the buoyancy of items in water improves.
So the events that may occur when ocean salinity increases will be;
1)The mass of water increases.
2) Freezing point of water decreases.
3) buoyancy of objects in the water increases.
Hence the masses of water increase, the freezing point of water decreases. and the buoyancy of objects in the water increases may occur when the ocean sanity increases.
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how does a changing magnetic field affect a piece of copper wire?
Answer: When you change the direction of the current, you also change the direction of the magnetic field. Because the magnetic field created by the electric current in the wire is changing directions around the wire, it will repel both poles of the magnet by bending away from the wire.
Explanation:
A car of mass 1500kg is brought to rest from a velocity of 25m/s by a constant force of 3,000N. Determine the change in momentum produced by the force and the time it takes for the car to come to rest.
answer:
change in momentum = 37,500kg.m/s in the opposite direction
time it takes = 12.5s
working:
u=25m/s
v=0m/s
F=ma
-3000=(1500)(a)
-3000÷1500=a
a= -2m/s^2
Change in momentum=mv-mu
(1500)(0)-(1500)(25)
= -37,500kg.m/s
relax the( - ) represents direction
v=u-at
0=25-2t
2t=25
t= 12.5s
How do the atomic numbers of different isotopes of an element compare?
Answer:
Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Explanation:
Answer:
Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but each element isotope has a different atomic weight due to the different number of neutrons.
Explanation:
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what is the difference between positive and negative work? (no links)
Answer:
Positive work is said to be done when the force acting on a body produces a displacement in the direction of the force. Negative work is said to be done when the force acting on a body produces a displacement opposite to the direction of the force
Explanation:
When the displacement of the body the in the direction of the force then the work done is positive. For example :- a man pushing a car in a straight path.
When the displacement is in a direction opposite to the direction of the force then the work done is said to be negative. For example :- work done by the friction.
what is capacity and capacitor
Answer:
Explanation:
Capacity: the max amount that something can contain.
"the capacity of the freezer is 1.1 cubic feet"
capacitor: device for storing electrical energy, includes two conductor that are close to one another and insulated from each other. A simple example is a parallel-plate capacitor.
Source: Britannica.com
Answer:
capacitythe maximum amount that something can containcapacitora device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulatorExplanation:
hope it helpslearn with brainlyA common flea is recorded to have jumped as high as 21 cm. Assuming that the jump is entirely in the vertical direction and that air resistance is insignificant, calculate the time it takes the flea to reach a height of 7.0 cm.
Answer:
t = 0.12 s
Explanation:
Applying the second equation of motion under free fall,
h = ut + [tex]\frac{1}{2}[/tex]g[tex]t^{2}[/tex]
where: h is the height, u is its initial velocity, t is the time taken and g is the gravitational force.
But, u = 0 m/s, h = 21 cm (0.21 m) and g = 9.8 m/[tex]s^{2}[/tex]. Then:
0.21 = 0 + [tex]\frac{1}{2}[/tex] x 9.8 x [tex]t^{2}[/tex]
0.21 = 4.9[tex]t^{2}[/tex]
[tex]t^{2}[/tex] = [tex]\frac{0.21}{4.9}[/tex]
= 0.04286
⇒ t = 0.2070
= 0.21 s
The time taken for the flea to jump as high as 21 cm is 0.21 s.
The time taken for the flea to reach a height of 7.0 cm (0.07 m) can be determined as;
h = ut + [tex]\frac{1}{2}[/tex]g[tex]t^{2}[/tex]
0.07 = 0 + [tex]\frac{1}{2}[/tex] x 9.8 x [tex]t^{2}[/tex]
0.07 = 4.9[tex]t^{2}[/tex]
[tex]t^{2}[/tex] = [tex]\frac{0.07}{4.9}[/tex]
= 0.01429
t = 0.1195
= 0.12 s
A water-skier with weight Fg = mg moves to the right with acceleration a. A horizontal tension force T is exerted on the skier by the rope, and a horizontal drag forcc Fa is cxertcd by thc watcr on the ski. The water also exerts a vertical lift force L on the skier. Which of the following are correct relationships between the forces exerted on the skier-ski system? Select two answers. (A) T-Fd = ma (B) L-Fg=ma (C) L- =0 (D) T- Fd 0
Answer:
The correct relationships are T-fg=ma and L-fg=0.
(A) and (C) is correct option.
Explanation:
Given that,
Weight Fg = mg
Acceleration = a
Tension = T
Drag force = Fa
Vertical force = L
We need to find the correct relationships
Using balance equation
In horizontally,
The acceleration is a
[tex]T-Fd=ma[/tex]...(I)
In vertically,
No acceleration
[tex]w=L[/tex]
[tex]mg-L=0[/tex]
Put the value of mg
[tex]L-fg=0[/tex]....(II)
Hence, The correct relationships are T-fg=ma and L-fg=0.
(A) and (C) is correct option.
In the attached picture we can see the original question.
A water-skier with weight Fg = mg moves to the right with acceleration a. A horizontal tension force T is exerted on the skier by the rope, and a horizontal drag force Fd is exerted by the water on the ski. The water also exerts a vertical lift force L on the skier. The correct relationships are:
(A) [tex]T - F_d = ma[/tex]
(C) [tex]L - F_g = 0[/tex]
A water skier is moving to the right with acceleration a. If we analyze the forces in the horizontal direction, we can identify the tensión force (T), in the direction of the movement and the drag force (Fd), opposing to the movement. According to Newton's second law of motion, the resultant of these forces is equal to the product of the mass of the water skier and its acceleration.
[tex]T - F_d = ma[/tex]
In the vertical direction, we have the weight of the water skier (Fg) and the lift force (L) exerted on the skier by the water. The resultant of these 2 forces is zero, since there is no acceleration in the vertical direction.
[tex]L - F_g = 0[/tex]
A water-skier with weight Fg = mg moves to the right with acceleration a. A horizontal tension force T is exerted on the skier by the rope, and a horizontal drag force Fd is exerted by the water on the ski. The water also exerts a vertical lift force L on the skier. The correct relationships are:
(A) [tex]T - F_d = ma[/tex]
(C) [tex]L - F_g = 0[/tex]
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The average speed of a runner in an 800 meter race was 7.0 meters per second.How long did it take the runner to complete the race?
Answer:
114.29s
Explanation:
average speed = distance/Time
Given
speed = 7m/s
distance = 800m
Required
Time taken by the runner to complete the race
From the formula:
Time = Distance/speed
Time = 800/7
Time = 114.29seconds
Hence it took the runner 114.29s to complete the race
How much to spend on groceries per month for 1 person.
USDA Food Plan Spending for a Single Person
Low-cost: $222.60. Moderate-cost: $272.20.
Please help me fast
A house uses eight 60 W lamps for lighting. On an average, each lamp is switched on for 6 hours each day. If the electricity tariff is Rs. 15 per unit, find the cost of electricity
a) for one day
b) for the month of January
(a) The cost of electricity for one day is Rs. 42 .
(b) The cost of electricity for the month of January is Rs. 1,302.
Average energy usedThe electric energy consumed in each is calculated as follows;
E = Pt
E = 60 x 6 = 360 Wh
E(total) = 8 x 360 Wh = 2880 Wh
The cost of Electricity is in kWh
2880 Wh = 2.8 kWh
Cost of electricicty for one dayC = 2.8 kWh x (Rs. 15)/kWh
C = Rs. 42
Cost of electricity for the month of January (31 days)C = Rs.42 x 31
C = Rs. 1,302
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A bar magnet is falling toward the center of a loop of wire, with the north pole oriented downwards. Viewed from the same side of the loop as the magnet, as the north pole approaches the loop, what is the direction of the induced current?.
The direction of the induced current is counterclockwise.
What is Lenz law?This states that induced electric current flows in a direction such that the current opposes the change that induced it.
The direction of the induced current is counterclockwise as a result of the north pole being oriented downwards which is the opposite direction of the hands of a clock movement.
Read more about Lenz law here https://brainly.com/question/13744192
if a tennis ball of 50g mass is thrown at 20m/s velocity and it hits a wall and bounces back, what will be the change of momentum?
Answer:
Gold is a relatively dense metal because its atoms have more protons then atoms of many other metals
Explanation:
3. Similar cells work together in a_
which is part of an_
which is part_
Which of these words describes a chemical property of gold?
A. Shiny
B. Insoluble
C. Inert
D. Malleable
Answer:
D. Malleable
Explanation:
Gold is metallic, with a yellow colour when in a mass, but when finely divided it may be black, ruby, or purple. It is the most malleable and ductile metal; 1 ounce (28 g) of gold can be beaten out to 300 square feet. It is a soft metal and is usually alloyed to give it more strength.
why a body in uniform velocity is zero acceleration ?
An advertisement for a new car states that its top speed is 180 km/h. If it could
travel at this speed for 3h, how far would it go?
4
Answer:
Distance = speed×time = 180×3 = 540 Km
A 100V battery is connected to two oppositely charged plates that are 10cm apart. i. What is the magnitude of the electric field? ii. Calculate the Electric Force exerted on a +200 C point charge. iii. What is the electric potential energy of the charge when it's 8cm and 2cm from the negatively charged plate? iv. How much work was required to move the charge from 8cm to 2cm? v. If the 10gram point charge was at rest at point A, what is the final speed at point B?
Answer:
1.) 1000 N/c
2.) 200000 N
3.) 60v
4.) 120000J
5.) 4899 m/s
Explanation:
Given that a 100V battery is connected to two oppositely charged plates that are 10cm apart.
1.) The magnitude of electric field strength is the ratio of potential difference per distance between the plates. That is,
Electric field = V/d
Electric field = 100/0.1
Electric field = 1000 wb
2.) Electric field strength is also the ratio of force per unit ccharge. That is,
Electric field = F / q
1000 = F / 200
Cross multiply
F = 1000 × 200
F = 200000 N
3.) What is the electric potential energy of the charge when it's 8cm and 2cm from the negatively charged plate?
The distance = 8cm - 2cm = 6cm
Electric field = V / d
Substitute the electric field and the distance into the formula
1000 = V / 0.06
Make V the subject of formula
V = 1000 × 0.06
V = 60 V
4.) How much work was required to move the charge from 8cm to 2cm?
Work done = VQ
Since V = 60v
Then,
Work done = 60 × 200
Work done = 120000 J
5.) If the 10 gram point charge was at rest at point A, what is the final speed at point B?
Work done = 1/2mv^2
120000 = 1/2 × 0.01 × v^2
V^2 = 120000/ 0.005
V^2 = 24000000
V = 4899 m/s
The magnitude of electric field strength has been 1000 wb.
The electric force (F) applied by 200 C charge has been 2000,000 N.
The values for electric potential energy has been 60 V.
The work done in moving the charge across the plate has been 12 kJ.
The speed of charge at point B has been 48.98 m/s.
The magnitude of electric field strength has been defined as the force per unit charge.
The expression for magnitude of electric field strength (E) has been:[tex]E=\dfrac{V}{d}[/tex]
Where, the voltage of battery, [tex]V=100\;\rm V[/tex]
The distance between plates, [tex]d=10\;\rm cm\;;0.1\;m[/tex]
Substituting the values for magnitude of electric field strength (E):
[tex]E=\dfrac{100}{0.1} \\E=1000\;\rm wb[/tex]
The magnitude of electric field strength has been 1000 wb.
The expression of electric force (F) applied by the battery has been given as:[tex]F=E\;\times\;q[/tex]
Where, the magnitude of electric field strength, [tex]E=1000\;\rm wb[/tex]
The charge for the force has been, [tex]q=200\;\rm C[/tex]
Substituting the values for electric force (F):
[tex]F=1000\;\times\;200\\F=200000\;\rm N[/tex]
The electric force (F) applied by 200 C charge has been 2000,000 N.
The electric potential energy (E) for charge has been given as:[tex]E=\dfrac{V}{d}[/tex]
The magnitude of electric field strength, [tex]E=1000\;\rm wb[/tex]
The distance between plates, [tex]d=8\rm \;cm-6\;cm\\d=2\;cm\;;0.02\;m[/tex]
Substituting the values for electric potential energy, (V):
[tex]1000=\dfrac{V}{0.0.06} \\V=1000\;\times\;0.06\\V=60\;\rm V[/tex]
The values for electric potential energy has been 60 V.
The work done (W) to move a charge has been given by:[tex]W=Vq[/tex]
Where, the electric potential energy of the battery has been, [tex]V=60\;\rm V[/tex]
The charge for the force has been, [tex]q=200\;\rm C[/tex]
Substituting the values for work done, (W):
[tex]W=60\;\times\;200\\W=12,000\;\text J\\W=12\;\rm kJ[/tex]
The work done in moving the charge across the plate has been 12 kJ.
The speed (v) of 10 g charge has been given as:[tex]W=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2W}{m} }[/tex]
Where, the work done on unit charge, [tex]W=12,000\;\rm J[/tex]
The mass of the charge, [tex]m=10\;g[/tex]
Substituting the values for calculating the speed of charge, (v):
[tex]v=\sqrt{\dfrac{2\;\times\;12,000}{10} } \\v=\sqrt{24,000}\\v=48.98\;\rm m/s[/tex]
The speed of charge at point B has been 48.98 m/s.
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Idris has a mass of 65 kg. He is standing on the second floor of his apartment building, 5 meters above the ground. What is his gravitational potential energy (GPE)? O A. 325J O B. 31,213 J O C. 3,185 J O D. 79.8J
Answer:A.325J
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Which zone shows the water table?
o 1
o 2
o 3
o 4
Answer:
3
Explanation:
i took the quiz
An 800 kg car exerts 4000N of applied force on a level road while
being opposed by 700 N of friction. Determine the acceleration of the car.
Answer:
a = 4.125 [m/s^2]
Explanation:
In order to calculate the value of acceleration, we must use Newton's second law, which tells us that the sum of forces must be equal to the product of mass by acceleration.
ΣF = m*a
where:
ΣF = sum of forces [N]
m = mass [kg]
a = acceleration [m/s^2]
Performing a summation of forces on the x-axis, we have:
4000 - 700 = m*a
4000 - 700 = 800*a
a = 4.125 [m/s^2]
Help me please........
Answer:
He must be riding on a horse named Saturday.
Explanation:
He rode Saturday on Friday, stayed in the town for 3 days and left on his horse, named Saturday.
I've heard this many times.
he left his house on a Thursday got their on a Friday and left on Saturday Explanation:
this is the best i can do
As light from a star spreads out and weakens, do gaps form between the photons?
Answer:
ggggggfjhfbgehfe no idk yes maybe
Explanation:
If you wanted to study regions where star formation is currently happening you could use: a. H-alpha emission to look for O and B stars b. 21 cm radiation to find neutral hydrogen clouds c. radio emission from carbon monoxide (CO) to find molecular cloud cores d. infrared emission to identify T Tauri stars
Whenever someone want to study regions where star formation is currently happening Infrared emission to identify T Tauri stars.
What is star-forming region?A star-forming region serves as a region of the celestial sphere where predominately young stellar objects can be found and where formation is likely occurring.
Infrared emission to identify T Tauri stars can be used in determining the formation, however it should be noted that Einstein X-ray Observatory made earliest detections of X-rays from T Tauri stars.
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A machine has an efficiency of 60%. If the machine is required to overcome a load of 30N with a force of 20N, calculate its mechanical advantage?
Explanation:
eff = m.a/ v.r
m.a = L /E
30/ 20
= 1. 5
A 120 watt bulb is a connected to a 48v line what is the current the flows in the bulb
[tex]\\ \sf\Rrightarrow P=VI[/tex]
[tex]\\ \sf\Rrightarrow 120=48I[/tex]
[tex]\\ \sf\Rrightarrow I=120/48[/tex]
[tex]\\ \sf\Rrightarrow I=2.5A[/tex]
what is the acceleration of the Tesla Model S in m/s²?
Answer: Tesla’s Model S Performance is the fastest-accelerating production car. The luxury sedan reaches 60 mph in just 2.4 seconds, which outperforms every supercar available today.
Explanation:
A portable hairdryer, plugged into a 110 V outlet, has a current of 10 A flowing through it. What is its power rating
A car is moving at 18km/hr when it accelerates at 4m/² for 2 seconds. What is the car's new velocity?
Answer:
44
Explanation:
v=u+a(t)
v=18+4(2)
v=22(2)
v=44 (where v=final velocity,u=initial velocity,a=acceleration,and t=time)
what is illuminance
Answer:
The amount of luminous flux per unit area
Explanation:
can someone right me a flooding psa ?
Answer:
Here is what I thought of: Below;
Explanation:
Floods, big or small, can have devastating effects on your home and your family. You can take steps to reduce the harm caused by flooding. Learn how to prepare for a flood, stay safe during a flood, and protect your health when you return home after a flood.
Preparing for a Flood
Learn how to prepare for a flood, including how to create a plan, supplies you’ll need, and getting your home ready.
Floodwater Safety
Floodwater and standing water can be dangerous. Protect yourself and your loved ones from risks brought on by floods.
Returning Home
Returning home after a flood? Be aware that your home may be contaminated with mold or sewage. Take steps to keep yourself and your loved ones safe.
Hope this helps you. :)