The cross sectional area of an optical fibre is 6.3 x 10^-6 m^2 The intensity of the light entering the optical fibre is 3.2 x 10^7 W/m^2 Calculate the power of the light entering the optical fibre

A student throws a 5.0-newton ball straight up. What is the net force on the ball at its maximum height? (1) 0.0 N (3) 5.0 N, down (2) 5.0 N, up (4) 9.8 N, down

Ella has a mass of 56 kg, and Tyrone has a mass of 68 kg. Ella is standing at the top of a skateboard ramp that is 1.5 meters tall. Which conclusion is best supported by the given information? A.

What happens when an object absorbs electromagnetic waves?

You're using a rope to pull a sled at constant velocity across level snow, with coefficient of kinetic friction 0.050 between sled and the snow. The sled is loaded with physics books, giving a total mass of 39 kg 1.

Find the work done by a force of 20 lbs acting in the direction north 50 degrees west in moving an object 4 feet due west?

A box with a mass of 7 kilograms is pushed up a ramp to a height of 5 meters. What is the work done against the force of gravity?

A motorcycle is travelling north at 11m/s. How much time would it take for the motorcycle to increase its velocity to 26m/s (N) if it accelerated at 3.0m/s2?

What is the formula of the most stable oxide of francium? A) Fr2O B) Fr2O3 C) FrO D) FrO2

17. A ranger needs to capture a monkey hanging on a tree branch. The ranger aims his dart gun directly at the monkey and fires the tranquilizer dart. However, the monkey lets go of the branch at exactly the same time as the ranger fires the dart.

Suppose a car is traveling at + 25.0 m/s, and the driver sees a traffic light turn red. After 0.340 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2.