Answer:
Its testing the prototype
Explanation:
I just took the test on apex :)
A student is planning to make changes to a circuit. Which change will
increase the voltage?
A. Add another switch between the lightbulb and the battery.
B. Replace the existing battery with a larger battery.
c. Add another lightbulb between the battery and the switch.
D. Remove the existing lightbulb from the circuit.
Answer: B replace the battery with a larger one
Explanation: B
Answer:
Replace the wire with one that is thicker.
Explanation:
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:
I hope my answer helps u :)
In urgent need of help, science is my worse subject!
The first reason is that in the past humans didn't necessarily see the connections between the oceans and thus labelled them that way separating them into 5 oceans and the names stuck to this day.
Secondly, while all the oceans of the world constitute one large Ocean, people need some way to identify each part of it since it is easier to think when we have different categories instead of one large category.
Hope that helped!
Using the diagram, what season is it in the northern hemisphere?
OWinter
OSummer
OAutumn (fall)
O Spring
The kinetic energy of a moving car is less than the amount of chemical potential energy that is released when fuel is burned in the engine. Which statement best explains why this is so? A. Some chemical energy is transformed into potential energy as the particles in the fuel are rearranged. B. The force of gravity transforms some kinetic energy into gravitational potential energy. c. More of the car's energy is transformed into potential energy the faster it goes D. Friction causes some of the energy released by the fuel to be transformed into thermal energy.
Answer:
A moving car possesses mechanical energy due to its motion (kinetic energy). A moving baseball possesses mechanical energy due to both its high speed (kinetic energy) and its vertical position above the ground (gravitational potential energy).
Explanation:
Which of these is most directly related to the mass of an object? A. inertia B. acceleration C. velocity D. volume
Answer:
A. Inertia
Explanation:
Answer:
A inertia is directly related to mass
Explanation:
inertia
The resulting net force of an object is represented below. →10 N Which most likely represent the forces acting on the object? ↑ 63 N and ↓ 73 N ↑ 97 N and ↓ 87 N ← 63 N and → 73 N ← 97 N and → 87 N.
Resulting force is the vector sum of all the forces acting on an object. The resulting net force of →10 N can be represented by ← 63 N and → 73 N
Net force on an objectThe net force on an object is the sum of all the forces acting on an object. Resolving the forces in vertical direction and horizontal direction separately gives the net force on the object.
∑Fx = ma
∑Fy = ma
The net force is pointing towards the right and the correct option must contain two horizontal forces whose resultant is towards the right.
Considering following horizontal forces,
← 63 N and → 73 N, the net force = - 63 N + 73 N = 10 N (→ 10 N)← 97 N and → 87 N, the net force = -97 N + 87 N = -10 N (← 10 N)Thus, the resulting net force of →10 N can be represented by ← 63 N and → 73 N
Learn more about net force here: https://brainly.com/question/14361879
Answer: C, 63N and 73 N
Explanation:
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:
ii. Describe how thermal pollution from power plant discharge would affect the frequency of dead zones.
Answer:
Warmer water cannot hold as much dissolved oxygen as cold water can hold, which would increase the number of hypoxic zones/dead zones.
If it takes 20 seconds to push the table across the room.What is the power ?
Answer: Its applied force and friction, The friction is the drag and the applied force is you pushing
Billiard balls moving across a pool table is an example of _____ friction.
1. What is the weight (force due to gravity) of an object that has a mass of 15 kg?
Answer: 1470 N
Explanation: mass = 15
weight is the product of mass and force due to gravity
AS WE KNOW THAT
W = mG
W = 15 X 9.8
W = 1470 N
Calculate the answer to the correct number of significant digits.
-0.166
×0.033
5.) Scott pushes a piano along a slope and has an initial velocity of 10.0 m/s [up]. Its acceleration is 2.0 m/s2 [down].
a.) After its release, what is the piano’s velocity at 2.0 s, 5.0 s and 8.0s? b.) What is the piano’s displacement at 2.0 s, 5.0 s and 8.0s?
Answer:
a) 6m/s, 0m/s, -6m/s
b) 16m, 25m, 16m
Explanation:
For the first part of the problem, use the Kinematic Equation for Final Velocity:
V = Vi + atYou are looking for the final velocities of the times: 2s, 5s, and 8s (plug those in for t). We also know that the acceleration is going down so it is negative (-2 is plugged in for a). 10 is the initial velocity and it is positive.
For the second part of the problem, use the Kinematic Equation for Displacement:
ΔX = Vi(t) + 1/2a(t²)You are looking for the displacement of the piano at times: 2s, 5s, and 8s (plug in and square at t). Again, the acceleration is negative because it is in the direction of down, so plug -2 in for a. The initial velocity is positive 10. Plugging those numbers in for each variable should get the correct answer.
Hopefully this helped, I went on here in search of an answer and found it out myself and since no one has answered it yet, I'll help someone else out.
A force is applied to a block, causing it to accelerate along a horizontal, frictionless surface. The kinetic energy gained by the block is equal to which of the following
Answer:
The work done to the block
See
Workdone is Force×Displacement .
Also work done is total mechanical energy of body
As potential energy is 0Mechanical energy=Kinetic energy
So option C is correct
Identify the number of electrons each of the following atoms needs to gain or lose to have a stable outer electron configuration.
sodium (Na):
strontium (Sr):
sulfur (S):
astatine (As):
Betty drew the life cycle of a butterfly for a science exhibition. The life cycle showed the various stages of growth before the egg turns into a butterfly. What type of model did Betty use?
A. hypothetical
B. conceptual
C. mathematical
D. physical
Answer:
D.physical model
Explanation:
it is the evolution of butterfly
Rahul kept two plane mirrors at a certain angle in front of a burning candle. He could see 5 images of the candle in the mirrors. What might be the angle between the mirrors? PLEASE NOW I WILL MARK AS BRAINLIEST
Answer:
The angle between the mirrors is 90°.
Explanation:
Given that,
Number of image = 5
Rahul kept two plane mirrors at a certain angle in front of a burning candle.
We need to find the angle between the mirrors
Using given data
When Rahul kept two plane mirrors at a certain angle in front of a burning candle then see the 5 image of candle in the mirrors.
If rahul kept two plane mirrors at a 90° then we get the 5 image of candle.
Firstly we see the two images in both mirror and now first image of first mirror is see in second mirror and second image of second mirror is see in first mirror.
So, we can say that we see the 5 image of candle in the mirrors.
Hence, The angle between the mirrors is 90°.
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. :)
A transformer bank is rated at 300kva and consists of three 100kva transformers has a three phase 480v delta primary and a 120v/240v 3phase, 4 wire delta connected secondary. What is the calculated rating of the transformers primary and secondary currents?
The rating of the transformers primary and secondary currents will be 360.8A and 180.4A.
How to calculate the current?From the information given, the rating of the transformer bank is given as 300kVA. The full load primary current will be:
✓3 × V × I = 300 × 10³
✓3 × 480 × I = 300 × 10³
I = 360.8A
Also, the secondary load current will be calculated thus:
Transformation ratio = 240/480 = 0.5
Load current = 360.8 × 0.5
= 180.4 A
In conclusion, primary and secondary currents will be 360.8A and 180.4A.
Learn more about current on:
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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]
Which statement describes how the coil of wire is similar to a bar magnet?
(1 point)
o They both have north and south magnetic poles.
o They both require a battery or other power source.
O They both have no influence on the current in the wire.
OThey both keep the magnetic field strength the same.
Answer:
They both have North and South magnetic poles
Explanation:
No matter how a magnet is made or what material it will have both resistance and attraction
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.
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 8.80 cm. If the cork is 10.5 m from shore, how long does it take a ripple passing the cork to reach the shore?
Answer:
12m / 7.3*10^-2m/cy = 164.38 cycles.
164.38cy / 2cy/s = 82.2s.
Explanation:
HELP HELP
Preview the map listed below. List 5 questions about this map that will help predict the text. Use your 5 W’s and h questioning techniques. Predict what the text will be about.
A map of Africa with two keys. The first key uses symbols to represent goods and resources that come from Africa such as cocoa, coffee, rice, rubber. The second key uses color to represent activities in Africa such as commercial plantation agriculture, irrigated agriculture, livestock raising, Nomadic herding.
The text that can be inferred from the map is about the crops that are gotten from Africa and how agriculture can be developed in the area.
What is agriculture?It should be noted that agriculture simply means the planting of crops and rearing of animals for human use.
In this case, the text that can be inferred from the map is about the crops that are gotten from Africa and how agriculture can be developed in the area.
The use of irrigation, and nomadic herding can be sent in Africa. Therefore, this can be the central idea in the text.
Learn more about agriculture on:
https://brainly.com/question/474688
Answer:
Who was involved in the listed keys on the map provided?
What happened to symbols representing goods and resources that come from Africa?
When did commercial plantation agriculture, irrigated agriculture, livestock raising, and Nomadic herding occur in Africa?
Where did cocoa, coffee, rice, and rubber cone originate in Africa?
Why did Africa transpire as commercial plantation agriculture, irrigated agriculture, livestock raising, and Nomadic herding?
How did it change over time?
Explanation:
How are mass and acceleration related?
Answer:
The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.
Explanation:
Which statement about the photoelectric effect is true?
A When light acts as a wave, electrons are removed from a metal,
B. It occurs when an electric current causes light to be produced,
C. An electric current is produced when light shines on a surface,
D. It occurs any time an electric current is produced.
Answer: A
Explanation:
The photoelectric effect was first proposed by Einstein. He claimed that when a light wave comes in contact with an electron, it has the ability to strip that electron from its atom. It depends on how much energy the light wave is carrying, and what type of atom the light is hitting. We use the photoelectric effect in garage motion sensors.
Which forces can be either attractive or repulsive.
Answer:
Magnetic forces.
When the magnets are put together, the north pole is attracted to the south pole, which the south pole goes toward the opposing pole on the opposite magnet. Complicated, yes, but how magnets work.
I hope this helps!
PLEASE HELP I NEED THIS FAST
Describe how electric potential energy, kinetic energy, and work change when two charges of opposite sign are placed near each other.
Answer:
If the charges have the same sign, so that qsqt>0, then the potential energy decreases as the charges separate; if the charges have opposite sign, the potential energy increases from negative infinity.
Explanation:
I hope this answered your question!
A student pedaling a bicycle applies a net force of 250 N. The mass of the rider and the bicycle is 48 Kg. Assuming no friction is present, what is the acceleration of the bicycle and rider? (1 N= 1.0 kg-m/sec?)