Other Physics Answers

A soccer ball is kicked horizontally off a 22m-high hill and lands a distance

of 35.0m from the edge of the hill. Determine the initial horizontal velocity

of the soccer ball.

A soccer ball is kicked horizontally off a 22m-high hill and lands a distance

of 35.0m from the edge of the hill. Determine the initial horizontal velocity

of the soccer ball.

A 100 N force that makes an angle of 30^o with the horizontal is used to move a 10 kg crate across a smooth floor. The crate moves through a distance of 500 cm. Find the work done by the force.

A ping-pong ball and a golf ball have the same speed. Which one will have the larger kinetic energy? Explain your answer.

A tennis ball is thrown upwards with sufficient speed to reach a height of 12 m.

(i) What is the kinetic energy of the tennis ball at a height of 12 m?

(ii) Calculate the speed of the tennis ball when it reaches a height of 6 m.

A stone is thrown horizontally off a 25 m high building. It hits the ground a distance of 20 m from the foot of the building. What is the initial velocity of the stone?

A signal is transmitted from a ship and an echo is received from an object below the ship 4 s later. Calculate the distance of the object from the ship if the speed of sound in water is 1400 m/s.

What is the range of the wavelengths of light that is visible to the human eye?

A 20 kg brick stands upright on the ground as shown. What is the pressure it exerts on the ground?

Specific of brick : Height ( 10cm) Length (20cm) Width (5cm)

A uniform electric field E = 5000 N/C passing through a flat square area A = 2m2. Determine the electric flux. Note: The angle between the electric field direction and a line drawn perpendicular to the area is 60 degree.