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Anni [7]
2 years ago
6

A yellow ball with a mass of 2 kg is rolling across the floor at 3 m/s. A red ball with a mass of 3 kg is rolling across the sam

e floor at 3 m/s. Which ball has greater kinetic energy, and why?
Physics
2 answers:
marta [7]2 years ago
7 0

Answer:

mass of 3 kg has greater kinetic energy.

Olin [163]2 years ago
3 0

Answer: The red ball has greater kinetic energy, because it has a greater mass.

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Suppose the tip of the minute hand of a clock is two inches from the center of the clock. Determine the distance traveled by the
sashaice [31]
1) The minute travels the circumference of a 4 inches circle is 60 minutes:

Circumference = 2πr = 2π(2in) = 4π in
Time = 60 minutes

2) Constant angular velocity => (4π / 60) = (x / 20) => x = 4π / 3 inches

x = 4.19 inches

Answer: 4.19 inches

4 0
2 years ago
A billion years ago, Earth and its moon were just 200000 kilometers apart. Express this distance in meters.​
Luda [366]

Answer:

The  value is  x =  200000000 \  m

Explanation:

From the question we are told that

  The  distance between the earth and the moon is  d  =  200000 \  km

Generally ,

     1 \  km  =  1000 \  m

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=>    x = \frac{200000 *  1000}{1 }

=>   x =  200000000 \  m

           

4 0
2 years ago
Number 5 and 6 i need just give answer
sashaice [31]

Explanation:

voltage = current × resistance

5.

12 V = 4.2 A × resistance

resistance = 12 V / 4.2 A = 2.857142857... Ohm

FYI :

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6.

120 V = current × 12 Ohm

current = 120 V / 12 Ohm = 10 A

8 0
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A technique in which the muscles are stretched by an outside force is called _____.
geniusboy [140]
A technique in which the muscles are stretched by an outside force is called Passive Stretching 
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The universal law of gravity states that all objects attracts all other objects.
andreev551 [17]
When the object is big enough to contract itself into a ball.
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