A body is at aheight of 81m and is ascending upwards with a velocity of 12m/s. a body of 2 kg weight is dropped from it. if g=10m/s^2. the body will reach the surface if earth in how much time.

The masses of the objects are m1 = 17.0 kg and m2 = 10.5 kg, the mass of the pulley is M = 5.00 kg, and the radius of the pulley is R = 0.300 m. Object m2 is initially on the floor, and object m1 is initially 4.

Using a simple machine, a student is able to lift a 500N weight by applying only 100N. What is the mechanical advantage of the simple machine? A) 0.2 B) 1 C) 5 D) 50000

Magnetoencephalography (MEG) is a noninvasive method for studying electrical activity in the brain. It is based on the principle that an electric current creates a magnetic field, whether the current is in a wire or in the neurons of a brain.

Give an example of a scientific hypothesis. Explain how you would test it, and how it could be falsified (proved untrue).

For a particle undergoing constant acceleration along the x-axis, the velocity vs. time graph for the particle which had an initial velocity of vox is

Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each beat takes 0.16 s, the average force exerted on the blood is a. 3.0" 102 N b. 0.22 N c. 0.16 N d. 0.30 N e. 0.98 N

What is the formula for calculating the mass when i have the number of volume and density

What is the name for potential difference that causes current to flow? (A) electric charge (B) static discharge (C) voltage

How is a herpetologist and a ecologist similar

In an oscillating lc circuit, when 75.0% of the total energy is stored in the inductor's magnetic field, (a) what multiple of the maximum charge is on the capacitor and (b) what multiple of the maximum current is in the inductor?