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KIM [24]
2 years ago
12

A police officer is using her radar to check speeds. She is moving south at 50 mph. You are moving

Physics
1 answer:
Luda [366]2 years ago
8 0

Answer:

the relative speed should be 40mph

Explanation:

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if you have an isotope of the element carbon (C) that has the mass number of 14, what other information would help you determine
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The number of protons
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Which image shows an example of the strong nuclear force in action?
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6 0
3 years ago
A train 400 m long is moving on a straight track with a speed of 81.4 km/h. The engineer applies the brakes at a crossing, and l
Luda [366]

Answer:

86.5m

Explanation:

first convert km/h

then

81.4*1000/60*60=22.6

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then, x1/t1=x2/t2

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3 0
2 years ago
A 2.00 kg block hangs from a spring. A 300 g body hung below the block stretches the spring 2.00 cm farther. (a) What is the spr
Leokris [45]

The spring constant is 147 N/m

Given the mass of the block is 2.00 kg , the mass of the body is 300 g and the length of the spring is 2.00 cm

We need to find the spring constant

A spring is an object that can be deformed by a force and then return to its original shape after the force is removed.

The force required to stretch an elastic object such as a metal spring is directly proportional to the extension of the spring

We know that F = kx

300(9.8)= k (0.02)

k = 147.15 N/m

Rounding off to the nearest is 147N/m

The spring constant is 147N/m

Learn more about Hooke's law here

brainly.com/question/15365772

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7 0
2 years ago
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dexar [7]

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Explanation:

3 0
3 years ago
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