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trasher [3.6K]
3 years ago
12

50 POINTS!!!!!

Physics
2 answers:
FinnZ [79.3K]3 years ago
8 0

Answer:

The answer is  C.move forward rapidly until stopped.

Explanation:

50 miles an hour is a very high speed. The momentum transfer to the car at stop light will move the car forward rapidly until its brake is able to stop it.

n200080 [17]3 years ago
4 0

Answer:

C

Explanation:

law of conservation of momentum says the car that u hit will move forward rapidly. then it wuld stop. ans is C

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Explanation:

Michael should put the vase at the bottom of the shelf to reduce the potential energy because the height of the vase to the floor is nearly zero.

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PLZZ HELP ME ASAP!! If you get it correct I will give brainliest and 50 POINTS!!
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changes, same

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Which atom is invloved in giving your heart energy to beat ?
Juli2301 [7.4K]

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3 years ago
An electron (mass = 9.11 X 10^-31 kg) leaves one end of a TV picture tube with zero initial speed and travels in a straight line
nlexa [21]

Answer: a) 2.5 * 10^14, b) t = 1.2*10^-8 s, c) F = 2.2775 * 10^-15 N

Explanation: Since it starts from rest, initial velocity = 0, final velocity (v) = 3*10^6 m/s, distance covered (s) = 1.80cm = 1.80/100 = 0.018m

Since the force on the electron is constant, it acceleration will be constant too thus making newton's laws of motion valid.

Question a)

To get the acceleration, we use the formulae that

v² = u² + 2as

But u = 0

v² = 2as

(3*10^6)² = 2*a*(0.018)

9* 10^12 = 0.036*a

a = 9 * 10^12 / 0.036

a = 250 * 10^12

a = 2.5 * 10^14 m/s².

Question b)

To get the time, we use

v = u + at

But u = 0

v = at

3*10^6 = 2.5 * 10^14 * t

t = 3*10^6 / 2.5*10^14

t = 1.2*10^-8 s

Question c)

To get the force, we use the formulae below

F = ma

F = 9.11*10^-31 * 2.5 * 10^14

F = 22.775 * 10^-17

F = 2.2775 * 10^-15 N

6 0
3 years ago
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