Physics Answers

A simple circuit has a 4V battery and a lamp. There is 30mA of current in the lamp. How much energy is transferred to the lamp in 5 minutes?

A clown in a circus is about to be shot out of a cannon with a muzzle velocity of 15.2m/s, aimed at 52.7° above the horizontal. The net is at the same height as the mouth of the cannon. a. How long will the clown in the air? b. How far away should his fellow clowns position a net to ensure that he lands unscathed?

A balloon powered car is shot horizontally off the end of a 2.7 m high table at 5.5 m/s. How far horizontally from the edge of the desk does the car land?

The input voltage to a transformer is 24 V a.c. and the output voltage is 6.0 V. The input coil has 720 turns
How many turns are on the output coil?

A ball is thrown vertically upward at 32 m/s a. How long will it take for the ball to reach it’s maximum height? b. What will be the ball’s velocity once it returns to the spot where it was thrown?

A ball is launched from the lab table, with an initial velocity of 2.5 m/s. If the table is 0.7 m high, how far from the table does it land? How long does it take to land?

This block is pushed by a spring attached to the wall, slides across the table, and then falls to the ground. The block has a mass m 1.35 kg. The spring constant is k = 560 N/m, and the spring has been compressed by 0.11 m. The block slides a distance d 0.65 m across the table of height h 0.75 m, find the speed of the block when it lands on the floor

A light aircraft of mass 1200 kg starts from rest and accelerates along a straight horizontal runway. Their aircraft engine produces a constant thrust of 3400 Newtons.A constant friction force of 400 Newton acts on the aircraft.the aircraft takes off when it reaches a speed of 35 metres per second.calculate the distance travelled by an aircraft from a standing point until it takes off.

Given a 10 V battery, explain how you can measure this voltage using an oscilloscope

The force of friction between an object and the surface upon which it is sliding is 15N. The mass of the object is 20jg. What is the coefficient of kinetic friction?