How long must a simple pendulum be if it is to make exactly one swing per four seconds? (that is, one complete oscillation takes exactly 8.0 s.) ?

As a battery is used to charge a capacitor, does the overall charge inside the battery get smaller, greater, or stay the same?

Where would you expect the air pressure to be the greatest in a valley? pick one. A - at the bottom of the valley B - at the tops of the mountains that form the valley C - on the sides of the valley D - above the mountains that form the valley

Initially, 1.00 mol of an ideal monatomic gas has 75.0 J of thermal energy. If this energy is increased by 24.0 J, what is the change in entropy?

50 cm to mA flat coil of wire consisting of 20 turns, each with an area of 50 cm2, is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s.

The velocity of a car changes from 5 m/s to 10 m/s. what is the acceleration of the car?

A rocket with a total mass of 330,000 kg when fully loaded burns all 280,000 kg of fuel in 250 s. The engines generate 4.1 MN of thrust. What is this rocket's speed at the instant all the fuel has been burned if it is launched in deep space?

Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a continuación, se mantiene con esa velocidad durante 4 s, y en ese momento frena uniformemente y se detiene en 3 s.

A 2.0-kilogram mass is located 3.0 meters above the surface of Earth. What is the magnitude of Earth's gravitational field strength at this location? (1) 4.9 N/kg (3) 9.8 N/kg (2) 2.0 N/kg (4) 20. N/kg

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as: