What does a simple pulley do?

A. It makes you have to pull harder on the rope.

B. It increases the force.

O O O O

C. It redirects the force.

D. It makes the load heavier.

A dog runs with an initial speed of 1.5 m/s on a floor. It slides to a stop with an acceleration of - 0.35 m/s^2. How long does it take for the dog to stop?

Scientific cosmology Choose one: A. investigates the overall structure and history of the Universe. B. pertains to legends and verbal history about the beginnings of the Universe. C. proves the Big Bang theory. D.

Given a temperature of 25 Kelvin, what is the approximate temperature in degrees Celsius? A. - 348°C B. - 273°C C. - 248°C D. 398°C

A spring-loaded pellet gun is designed to fi re 3.00-g projectiles horizontally at a speed of 45.0 m/s. (a) If the spring is compressed to its maximum design difference of 8.00 cm, what spring constant is required?

How much does the sky weigh

Why is specific heat different for different materials

What must happen for an ion To form

What type of material is inside the holes in an electrical outlet?

A fisherman noticed that a float makes 30 oscillations in 15 seconds. The distance between two consecutive crests is 2 m. What is the period and frequency of the wave? What is the wave speed?

A small spaceship with a mass of only 2.6 ✕ 103 kg (including an astronaut) is drifting in outer space with negligible gravitational forces acting on it. If the astronaut turns on a 12 kW laser beam, what speed will the ship attain in 1.