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snow_lady [41]
2 years ago
15

an object starts from rest with a constant acceleration of 8.0m/s^2 along a straight line.find the average speed for 5 second in

terval
Physics
1 answer:
frozen [14]2 years ago
6 0

Answer:

40 m/s

Explanation:

If you multiply the acceleration with time you get the average speed.

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PE=mgh
150J=(0.150)*(9.8)*h
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4 0
3 years ago
When there are more coils added to the wire of an electromagnet what happens to
fiasKO [112]

In technical terms, every coil of wire increases the "magnetic flux density" (strength) of your magnet.

So it's A (magnetic field increase)

5 0
2 years ago
24. While measuring the length of a book, the reading of the scale at one end is 5.0 cm and at the other end is 20.5
il63 [147K]

Answer:

...do

Explanation:

24. While measuring the length of a book, the reading of the scale at one end is 5.0 cm and at the other end is 20.5

cm. What is the length of the book in mm?

25. Explain the modifications

3 0
3 years ago
A total distance of 4.5km. The overall journey takes 0.62h, whats the average velocity
Westkost [7]

Answer:

7.3km/hr

Explanation:

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6 0
2 years ago
1. (15 points) Small cart is rolling down an inclined track and accelerating. It fires a ball straight out of the cannon as it m
Elena L [17]

Answer:

Explanation:

This problem can be solved with the conservation of the momentum.

If the ball is fired upward, the momentum before and after the ball is fired must conserve. Hence, the speed of the ball is the same that the speed of the car just in the moment in wich the ball is fired.

Hence, the result depends of the acceleration of the car. If the change in the speed is higher than the speed of the ball, it is probably that the ball will be behind the car or it will come back to the car.

If the ball is fired forward, and if the change in the speed of the car is not enogh, the ball will be in front of the car.

HOPE THIS HELPS!!

5 0
3 years ago
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