It takes about 200 N to push a vehicle on a flat road. How much energy do you need to expend to push this vehicle for 1 km?

Show your calculations here:

If A = (6i-8j) units, B = (-8i-3j) units, and C = (26i-19j) units, determine a and b such that aA + bB + C = 0

A current of 6 A runs through a coffee machine connected to a 120 V circuit. What is the resistance of the coffee machine?

The electrostatic force of attraction between two charges, a and b, is proportional to

When a physical change occurs, the mass of the substance is conserved. This means that the total mass of the substance remains the same from beginning to end.

A 0.060 kg ball hits the ground with a speed of - 32m/s. The ball is in contact with the ground for 45 milliseconds and the ground exerts a + 55 N force on the ball. What is the magnitude of the velocity after it hits the ground? A. 9.3m/s B.

True or False: If your gas pedal jams, you should turn the key to lock to lock the steering wheel.

Pylon cables in the National Grid have some resistance. Power (watts) = Current2 (amperes) x Resistance (ohms) Looking at the power equation above, can you explain why transmitting electricity at a very high voltage is beneficial?

A bicycle racer sprints near the end of a race to clinch a victory. The racer has an initial velocity of 12.1 m/s and accelerates at the rate of 0.350 m/s2 for 6.07 s. What is his final velocity?

The current in a wire increases from 5 A to 10 A, what happens to its magnetic field? The field is twice as strong the distance of a charged particle from a wire changes from 10 cm to 20 cm, what happens to its magnetic field?

At a constant pressure and a temperature of 280 K, the gas in a cylinder has a volume of 10.0 liters. If the volume of the gas is increased to 20.0 liters, what is the new temperature? 2800 K 28 K 140 K 560 K