The acceleration due to gravity on the Moon's surface is one-sixth that on Earth. What net force would be required to accelerate a 25.0-kg object at 5.80 m/s2 on the Moon?

a. 4.31 N
b. 24.2 N
c. 8.7 N
d. 145 N
e. 25.9 N


d

Physics & Space Science

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An unknown particle in an accelerator moving at a speed of 2.00 × 10^8 m/s has a measured total energy of 1.22 × 10^-9 J. What is its mass? (c = 3.00 × 10^8 m/s)

a. 1.49 × 10^-26 kg c. 0.810 × 10^-26 kg b. 0.650 × 10^-26 kg d. 1.01 × 10^-26 kg

Physics & Space Science

At the same moment, one rock is dropped and one is thrown downward with an initial velocity of 29m/s from the top of a building that is 300m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance

What will be an ideal response?

Physics & Space Science

Two projectiles are fired at equal speeds but different angles. One is fired at an angle of 30° and the other at 60°. With no air resistance, the projectile to hit the ground first will be the one fired at

A) 30°. B) 60°. C) both hit at the same time

Physics & Space Science

Power: A 120-? laboratory resistor is rated at 0.25 W. How much current can safely flow through the resistor?

A. 30 A B. 2.1 mA C. 22 mA D. 46 mA

Physics & Space Science