Answer:
e) 200 J
Explanation:
Work done by a force on an object is the energy required for a force to move that object over a distance. It can be calculated using the formula:
W = F × d
Where; W = work done
F = force applied
d = distance
According to this question, F = 10N, d = 20m
W = 10 × 20
W = 200 J or N/m
in 2d kinematics what does “above horizontal” mean for angles i found from vectors?
Answer:
Explanation:
140m
Explanation:
The velocity must be broken down into x (horizontal) and y (vertical) components. We can use the y component to find how high the object gets. To find vertical velocity, vy, use vy=vosinθ.
vy=(75ms)sin45o=53ms
Next we find how long it takes to reach the top of its trajectory using vf=vo+at.
0ms=53ms+(−10ms2)t
t = 5.3s
Finally, find how high the object goes with d=vot+12at2.
d=(53ms)5.3s+12(−10ms2)(5.3s)2=140m
How does decreasing the distance between the two objects affect the gravitational force?
Answer:
Decreasing the distance between the two objects affect the gravitational force by strengthening it.
Explanation:
Gravity is stronger when the distance is shorter.
If two skaters standing still push against each other, the speed of the first is the same as the speed of the second, and in the opposite direction ONLY if both people have the same mass.
True or False
Answer:
True!
Explanation:
F = ma (force = mass times acceleration)
The force on each skater will be the same because of Newton's 3rd law...
F (1st skater) = F (2nd skater)
ma (1st skater) = ma (2nd skater)
If the skaters have different masses, they WILL have a different acceleration. Feel free to ask questions if needed.
If the car has a mass of 1000kg what is the cars weight
Answer:
2204.62 pounds
Explanation:
Which refers to the thermal energy that flows from one substance to another when the substances differ in temperature?
heat
temperature
convection
flow
Answer:
Heat
Explanation:
Heat. The thermal energy that flows from one substance to another when the substances differ in temperature. Thermal equilibrium. The state in which no thermal energy transfer occurs because both substances are at the same temperature. Specific heat.
Heat is the thermal energy that flows from one substance to another when the substances differ in temperature.
What is meant by thermal energy ?Thermal energy is the term used to describe the energy present in a system that is responsible for setting its temperature.
Here,
The average kinetic energy of the particles in a material is measured by its temperature. The overall kinetic energy of the particles in a material is measured by thermal energy.
The temperature and thermal energy of a material increase with the particle velocity.
The amount of thermal energy that is transferred from one media or object to another, or from an energy source to a medium or object, is measured in terms of heat.
Radiation, conduction, and convection are the three mechanisms through which such energy can be transferred.
The heat energy may be transformed into other types of energy, such as mechanical, kinetic energy, etc.
Hence,
Heat is the thermal energy that flows from one substance to another when the substances differ in temperature.
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You walk 45 m at an angle of 25 degrees S of E. Then you walk 30 m North. What is
the magnitude of the resultant vector?
Answer:
Explanation:
The formula for calculating the magnitude of the resultant vector is expressed as;
[tex]R = \sqrt{(\sum Fx)^2+(\sum Fy)^2}[/tex]
[tex]\sum Fx[/tex] is the sum of distances along the x component
[tex]\sum Fy[/tex] is the sum of distances along the y component
[tex]\sum Fx = 45 cos 25^0\\\sum Fx = 40.78m\\\\\sum Fy = -45 sin 25^0+30\\\sum Fx = 10.98m\\[/tex]
[tex]R = \sqrt{(40.78)^2+(10.98)^2}\\R = \sqrt{1663.0084+(120.61)}\\R = \sqrt{(1783.6184}\\R = 42.23m[/tex]
Hence the magnitude of the resultant vector is 42.23m
Answer:
NO
Explanation:
In which direction does the electric field point at a position directly east of a
positive charge?
• A. West
• B. South
•C. North
• D. East
Anser- EAST AP-EX
Answer:
D. East That's my correct answerWhat is significant about the temperature 0 K
A. Matter no longer exists
B. Ice melts
C. Water freezes
D. Particles no longer move
Answer: I's either A. Matter no longer exists or D. Particles no longer move
Explanation:
Sorry if I get it wrong
Hope his helps :)
Answer:
d
Explanation:
What is the formula of gravity force with its meaning
Answer:
he formula for the gravitational force includes the gravitational constant, which has a value . The unit of the gravitational force is Newtons (N). Fg = gravitational force between two objects ( ) G = gravitational constant ( ) m1 = mass of the first object (kg)
Explanation:
brainlist ?
Ariana is heating a beaker of water. She notices that the water at the bottom
of the beaker is warmer than the water at the top. Which type of thermal
energy transfer will eventually make the temperature of the water at the top
and bottom the same?
O A. Translation
O B. Radiation
C. Conduction
O D. Convection
Answer: the answer is D (convection)
Answer:
D.Convection
Explanation:
How are motion and acceleration alike? How are they different?
Answer:
Motion is the action of moving, and acceleration is the action of moving faster or increasing speed. I guess you could say they are both in a state of motion or moving.
Explanation:
What would happen if a needle hit the earth at the speed of light.
Answer:
The earth would be destroyed as we know it.
Explanation:
There's actually a utube vid about that.
Answer:
I think that the best question I've heard today
Explanation:
lol I think it would do catastrophic damage
what is the results of a loop of wire turning between two permanent magnets in a generator?
A. the permanent magnets have a current flowing through them.
B. the current in the loop of wire stops flowing.
C. the loop of wire has a current flowing through it
D. energy from the crank transforms into mechanical energy.
C. The loop of wire has a current flowing through it.
Answer:
c
Explanation:
a pex
Which movement will require the greatest amount of work to be done?
A a force of 10N moving an object a distance of 3.0m
B a force of 10N moving an object a distance of 5.0m
C a force of 15N moving an object a distance of 3.0m
a force of 15N moving an object a distance of 5.0m
D
A
B
Ос
Answer:
it's d)a force of 15N moving an object a distance of 5.0m pls mark me brainlist.
Gregg Reid of Atlanta, Georgia, built a motorcycle that is over 4.5 m
long and has a mass of 235 kg. The force that holds Reid and his motor
cycle in a circular path with a radius 25.0 m is 1850 N. What is Reid’s
tangential speed? Assume Reid’s mass is 72 kg.
With Georgia's motorcycle at over 4.5 m long and having a mass of 235 kg, Reid’s tangential speed is mathematically given as
vt=12.4m/s
What is Reid’s tangential speed?Generally, the equation for the Conservation of momentum is mathematically given as
mn=m1+m2
Therefore
mn=235+72
mn=307
Therefore
Fc=mn*a
THerefore
[tex]vt=\sqrt{\frac{rFc}{mn}}\\\\vt=\sqrt{\frac{25*1850}{307}}[/tex]
vt=12.4m/s
In conclusion, The tangential speed is
vt=12.4m/s
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An ant walks 8 squares to the East then walks 8 squares to the South then turns and walks 12 squares to the West and finally 18 squares to the North. What was the displacement of the ant?
Answer:
the ant is 4 squares west and 10 squares north.
Explanation: you just subtract north with south and east with west and the direction is gonna be where the bigger number is.
A force is applied to a box to move it to the right across the kitchen floor what forces are being used?
Answer:
The static "frictional force" and the "kinetic friction" will act on the box.
During a spring tide, what is arrangement of the moon, the sun and the earth?.
Explanation:
Spring tides generally occur twice a month—during new and full moons, when the Earth, Sun, and Moon line up in a row. In this arrangement, the gravities of the Sun and Moon work together and have the strongest pull on Earth. This produces the largest difference between high and low tide.
Spring Tides
During full moon or new moon phases, the gravitational forces of the Sun and Moon are maximized, producing very large ranges of tidal highs and lows called spring tides
A wave has a frequency of 6 Hz, how long is the period?
A- 12
B- .17
C- 6
D- 36
Answer:
B- 0.17
Explanation:
F = 1/T
T = 1/F = 1/6 = 0.16666666 = 0.17
Which explanation is based on scientific evidence?
Answer:
Scientific evidence is evidence that serves to either support or counter a scientific theory or hypothesis. Such evidence is expected to be empirical evidence and interpretable in accordance with scientific method.
Explanations which are not based on mere observations or intuitions and clearly based on reported evidences and experiments are called scientific evidence.
What are scientific evidences ?Although scientists frequently utilize evidence in other ways, such as when applying ideas to real-world issues, scientific evidence is evidence that helps to either support or refute a scientific theory or hypothesis. Such proof is anticipated to be empirical and interpretable using scientific techniques.
The requirements for scientific evidence vary depending on the area of study, but they are often based on the outcomes of statistical analysis and the quality of scientific controls.
Scientific theories and laws as well as intuitional predictions have limitations to gather information from a new system. How ever scientific evidences provide more accurate data.
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A place with a tropical climate would most likely be located (1 point)
a. near the equator
b. at high altitudes
c. near the poles
d. in the middle of a continent
I think its a
I hope its right if it is sub to me Bearonic
A tennis ball with a speed of 22.2 m/s is moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 14.9184 m/s. If the ball is in contact with the wall for 0.00965 s, what is the average acceleration of the ball while it is in contact with the wall? Take "toward the wall" to be the positive direction. Answer in units of m/s 2
Answer:
[tex]a=-3846.46\ m/s^2[/tex]
Explanation:
Given that,
Initial velocity of the ball, u = 22.2 m/s
Final velocity of the ball, v = -14.9184 m/s (minus sign shows opposite direction of motion)
Time for contact, t = 0.00965 s
We need to find the average acceleration of the ball when it is in contact with the ball. The acceleration of an object is equal change in velocity per unit time. So,
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{-14.9184 -22.2 }{0.00965 }\\\\a=-3846.46\ m/s^2[/tex]
So, the acceleration of the ball is [tex]3846.46\ m/s^2[/tex] towards the opposite direction of motion.
If a star is found directly above the sun on the h-r diagram, what can you conclude about its size?.
Answer:
It is larger than the Sun.
Explanation:
Brainliest pls
:3
If you slid down Splash Mountain you would eventually come to a big pool at the end. Which one of Newton's Laws is this?
Answer:
Gravity
Explanation:
Answer:
law of gravity
Explanation:
i think
how does the gravity of earth affect the moon?
(for science)
Answer:
The motion of the Moon is affected by the gravity of the Sun AND the Earth. The Moon's gravity pulls on the Earth and makes the tides rise and fall every day.
Explanation:
As the Moon passes over the ocean, there is a swell in the sea level. The Earth's gravitational force accelerates objects when they fall.
What is the difference between an object with a constant accleration and a constant velocity?
a. There is no difference between constant velocity and constant acceleration.
b. If an object has a constant velocity it will not have an acceleration- the velocity does not change. A constant acceleration means an objects velocity will increase or decrease by the same amount in each interval of time.
c. If an object has a constant acceleration it will not have a velocity. A constant velocitty means an object will increase or decrease displacement by the same amount in each interval of time
d. If an object has a constant acceleration on a velocity vs time graph the slope of the line will = zero.
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
To summarize, an object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of the object is constant, its velocity is changing. Velocity, being a vector, has a constant magnitude but a changing direction.
can u figure it out from there but if anything i think it is C
do you think they were used creatively?
(ahhhggg ignore i dont remember how to delete answers)
No. In my opinion, they were not used creatively. They were used speciously, disingenuously, and unimaginatively.
As always, others are free to disagree.
Heating one kg of water from 353K to 354K
Answer:
Explanation:
How much energy does it take to heat 1 kg of water?
The specific heat capacity of water is 4,200 Joules per kilogram per degree Celsius This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C. Lead will warm up and cool down fastest because it doesn't take much energy to change its temperature.
10.0 kg cannonball is thrown with a 7.5 m/s^2 acceleration. What is its force? *
Answer:
I think you mean what was the force applied on the cannonball, right? Well, that would be 75 N(newtons).
Explanation:
F = ma(force = mass x acceleration). Plus in the values it would be...
F = m(10.0 kg) x a(7.5 m/s^2), or 75 kg/s^2/75 N(newtons). Easy math.
A magnetic field is created ____________.
a. when a compass is placed next to a wire.
b. when an electric current flows through a wire.
c. when wire is wrapped around an iron core.
d. when wire is twisted into a loop.
Answer: B
Explanation:
Magnetic fields are created due to charges in motion. Current by definition is the amount of charge flowing over time. Therefore, the answer is B, when an electric current flows through a wire.
Answer:
b. when an electric current flows through a wire
Explanation:
Hans Oersted discovered about two hundred years ago that when the electric current flowed through a wire a magnetic field was created.
(*) Sorry for my late answer but I hope this helps others that are looking for this.
I got 100% ;)