Physics Answers

Some people think there is no gravity on the moon. Are they correct? explain why

 A bird of mass 2 kg is flying at 10 m s

−1 in latitude 60◦N, heading due east. Find the horizontal and vertical components of the Coriolis force acting on it.

What is the kinetic energy of a 1,500-kg car traveling at 110 kph if the car can reach this velocity in 12 seconds starting from rest? What is the power output of the engine in HP?

What is the kinetic energy of a 1,500-kg car traveling at 110 kph if the car can reach this velocity in 12 seconds starting from rest? What is the power output of the engine in HP?

A 3000-lb. car has an engine which can deliver 80 hp to the rear wheels. What is the maximum velocity at which the car can climb a 15 degree hill?

A horse exerts a force of 200 lb. while pulling a sled for 3 miles. If the trip takes 30 minutes, what is the power output of the horse in horsepower?

A boy pulls a wagon with a force of 15 lb by means of a rope that makes an angle of 40 degrees with the ground. How much work does the he does in moving the wagon 50 ft?

An fm radio station broadcast at a frequency of 109.8 hz. What is the wavelength of the radio signal?

An electromagnet exerts a force of 15 N and moves a soft iron armature through a distance of 12 mm in 50ms. Determine the power consumed

A current of 12 A flows in the element of an electric fire of resistance 25 Ω. Determine the power dissipated by the element. If the fire is on for five hours every day, calculate for a one-week period (a) the energy used, and (b) cost of using the fire if electricity cost ₱13.50 per kWh