A ball is thrown at a height of 1.2m above the ground with an initial speed of 20 m/s at an angle 60 degrees above the horizontal. find a vector valued function r (t) describing the position of the ball

The gas within a cylinder of an engine undergoes a net change in volume of 1.50 * 10-3 m3 when it does work at a constant pressure of 3.27 x 105 Pa If the efficiency of the engine is 0.

During a total lunar eclipse, the Earth, Sun, and Moon are arranged in a line, and light from the Sun is blocked out of view for a certain part of the Earth by the Moon. In what order do the Earth, Sun, and Moon line up? A. Earth, Moon, Sun B.

What are the base units in the metric system?

Initially, scientists described atoms as the smallest particles of matter. However, smaller particles within atoms were discovered. How did the scientific world respond to this new information

What does Kepler's second law state? A. Planets travel in ellipses. B. Planets sweep equal areas in equal times. C. A planet's apparent backward movement is termed retrograde motion. D.

Steve hears a siren emitting a frequency of 10 kHz when it is at rest. What frequency will Steve hear if the siren moves toward him at 30 m/s? Assume the speed of sound is 340 m/s. Answer options are: a. 11 kHz b. 10 kHz c. 0 kHz d. 9 kHz

What is the efficiency of a machine that has work input of 40 joules and work output of 35 joules

What happens to an object if the forces acting on it are unbalanced?

A 92-kg astronaut and a 2000-kg satellite are at rest relative to a space station. the astronaut pushes on the satellite, giving it a speed of 0.14 m/s directly away from the station.

How to calculate wavelength in m when you know the frequency?