Whish is a drawback of solar energy?

A. It is a non renewable source

B. It depends on the climate

C. It is difficult to use for electricity

D. It can be a source of water pollution

Difference between global warming and climate change

State the equation of momentum impulse theorem.

Cast-iron cannonballs used in the War of 1812 were occasionally heated for some extended time, so that when fired at houses and ships, they would set them on fire.

A combination of two or more simple machines is a (n)

A sinusoidal wave has period 0.20 s and wavelength 2.0 m. What is the wave speed?

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: