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katrin [286]
2 years ago
8

Question 1 of 15

Physics
1 answer:
Ierofanga [76]2 years ago
8 0

Answer:

d 75 miles per hour

Explanation:

60 ÷ 20

3 × 25 = 75

hoped that helped!!

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3) How far will 20 N of force stretch a spring with a spring constant of 140 N/m?
muminat

Answer:

7 meters, 2.8 meters

Explanation:

work done (nm) = force (n) * distance (m)

140= 20 * m

140/20 = m

m=7 meters

140= 50 * m

140/50 = m

m= 2.8 meters

4 0
2 years ago
Determine the kinetic energy of a 10 Kg roller coaster car that is moving with a speed of 2m/s.
skelet666 [1.2K]

In this question all required information's are already provided. Based on these details the answer to the question can be easily determined. Let us now write down all the information's that are already given.

Mass of the roller coaster = 1000 kg

Velocity of the roller coaster = 20.0 m/s

We know the formula for finding the kinetic energy is

Kinetic energy = 0.5 * mass * (velocity) ^2

                      = 0.5 * 1000 * (20)^2

                      = 0.5 * 1000 * 400

                      = 200000 Joules

So the Kinetic energy of the roller coaster is 200000 joules.

i hope this helps you friend good luck on your quiz or lesson

6 0
1 year ago
How many significant figures?<br> 5.0001<br> O None of these are correct<br> O 5<br> 02<br> 0 1
mezya [45]

5

if zero falls between two significant numbers it becomes significant.

6 0
3 years ago
What is the unit of work? *<br> A. Joule<br> B. Newton/meter<br> C. Watt<br> D. All of the above
djyliett [7]

Answer:

A! I already went through this unit. Joule.

Explanation:

3 0
3 years ago
Read 2 more answers
A solenoid has 450 loops each of radius 0.0254 m. The field increases from 0 T to 3.00 T in 1.55 s. What is the EMF generated in
allochka39001 [22]

Answer:

0.175 second

Explanation:

i hope it helps

8 0
2 years ago
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