At what angle should you launch a projectile from the ground so that it has the

a) greatest time of flight

b) greatest range, assuming no air resistance

A student throws a 140 g snowball at 6.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall if the duration of the collision is 0.17 s?

For hydrogen gas, H2, tables give values for the parame ters of eqn 7a of a-2728JKmoll, b-3.26x 10 3JK-2 mor and c - 0.50 J K2 mol - Calculate the value of the consta pressure heat capacity of hydrogen at 25 °C

as a car drives past a person standing on a sidewalk, the driver keeps a hand on the horn. how does the pitch of the horn differ for the driver and the person standing on the sidewalk?

Can u get anime powers in real life?

What happens when a vector is multiplied by a scalar? a) It gets rotated in the plane b) It gets longer c) It turns into a scalar d) It gets either longer or shorter, but does not change direction

A light beam in air strikes the surface of water at an angle of 26° with the normal. When it enters the water it bends toward the normal, making an angle of 19° with it. The velocity of light in air is approximately 300,000 km/s.

Which best explains the relationship between the speed of sound and the medium through which it passes?

g The magnetic force on a charged particle A. depends on the sign of the charge on the particle. B. depends on the velocity of the particle. C. depends on the magnetic field at the particle's instantaneous position. D.

How fast must a 1000 kg car be moving to have a kinetic energy of 1.0 kWh

Which of the following is used to measure weight? Newtons Liters Kilograms Meters