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miv72 [106K]
4 years ago
12

In an experiment, James studied the relationship between kinetic energy, mass, and velocity. Four masses were rolled across a sm

ooth surface. If the kinetic energy in Joules remains constant, and the masses change, predict the velocity of the ball with a mass of 40kg
Physics
1 answer:
Alex777 [14]4 years ago
3 0

Answer:

20

Explanation:

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Magnetic fields go from the north poles of magnets to the south poles of magnets.<br> true or false
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3 years ago
Jake drags a sled of mass 18 kg across the snow. The sled is attached to a rope that he pulls with a force of 70 N at an angle o
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If the 30 N on the rope were pulled straight up, it would offset the force of gravity ( m g = 10 kg * 9.8 N/kg = 98 N) , leaving a net force up from the ground on the sled of 98-30 = 68 N. Since the rope is pulled at the angle of 25o, only part of the force is in the upward direction, (30N)(sin(25) = (30)(.423) = 12.7. So the net force becomes 98 N down offset by 12.7 up or 98-12.7 = 85.3 N. Ah, there it is: C.
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3 years ago
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Think about the following statement Only communities located downstream in a watershed need to be concerned about how the water
Sunny_sXe [5.5K]
^^^^^^ i tottaly agree cause we as people should have that choice
3 0
3 years ago
A list of heat transfer examples are listed below. Which is NOT an example of convection?
Alex777 [14]

Answer:

C. Hot pavement burning your feet

Explanation:

Convection is a type of process where heat travels upwards and cold travels downwards.

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3 years ago
Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that th
d1i1m1o1n [39]

Answer:

Not possible.

Explanation:

Exoplanets are an active area of modern research. The article states that the outermost planet (Planet C) goes all the way around its star in less time than the innermost planet (Planet A). Which is not possible as it will violet Kepler's third law of planetary motion.  Which says that the square of orbital period of a planet is proportional to the cube of its semi-major axis of its orbit.

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4 years ago
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