A dog runs 27 m in 3 s. what is the dogs average speed.

a 9 m/s

b 24 m/s

c 30 m/s

d 81 m/s

Find the interest. A 105-day note for $14,200 at 8.5% interest.

Why is igneous rock always younger than any rock it cuts through?

How are levees constructed?

A temperature of a 50 kg block increases by 15°C when 337,500 J of thermal energy are added to the block. a. What is the specific heat of the object? show your work with units.

The cable lifting an elevator is wrapped around a 1.2-m-diameter cylinder that is turned by the elevator's motor. The elevator is moving upward at a speed of 2.7m/s. It then slows to a stop, while the cylinder turns one complete revolution.

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:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.