A 100 N block on a 30 incline, is being held motionless by friction. The coefficient of static friction between the block and the plane is 0.60. The force due to friction is?

Technician A says that most current trucks are protected from reverse polarity connections to the electrical system.

Energy conservation . A pool ball of mass m is shot off a 0.68 m high pool table and hits the floor with a speed of 6.0 m/s. What was the ball's initial velocity?

How did mount st. Helen get its name

An engine takes in 200 J of heat, expels 40 J of heat, and does 160 J of work. What is the efficiency of the engine? A. 40% B. 60% C. 80% D. 20%

1. A wave has a wavelength of 14 mm and a frequency of 17 Hertz. What is its speed? 2. What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 11 Hz?

On a sunny day does a bird or an aeroplane flying high in the sky casts its shadow on the ground

A cage containing male mosquitoes has a small earphone placed on top, through which the sound of a female mosquito is played. all the males immediately fly to the earphone and go through all of the steps of copulation.

The direction of the force on a current-carrying wire in a magnetic field is

One 10.0 amp resistor is wired in a series with two 10.0 amp resistors in parallel. A 45.0 C battery supplies power to the circuit. What is the total current through the circuit?

How to find acceleration