Physics

How do I find the velocity and direction of velocity

Here is the problem: In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.32 m. The mug slides off the counter and strikes the floor 1.60

How do I find the rev/s to give a centripetal acceleration of 19.6g given the following

The 20-g centrifuge at NASAs Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. Assume an astronaut in training sit

A plane starts from rest and accelerates uniformly at a rate of 5.0m/s/s for 10 sec.

what is the speed after 10 seconds? I know the speed formula is S= distance/time but if i do that then my answer is 0.5... which is wrong? after 10 seconds of speeding 5m/s/s it should be 50m/s-a = (v

Physics related problem!!! ten points for answer!!!

As a baseball is being caught, its speed goes from 28.0 m/s to 0.0 m/s in about 0.0050 s. The mass of the baseball is 0.160 kg. (a) (a) What is the baseballs acceleration? (b) What are the magnitud

Is acceleration a vetor or scalar quantity

Velocity and acceleration are vector quantities. They have magnitude and direction. Speed is the scalar magnitude quantity of velocity-Vector

Help with Homework Problem: Coulmb's Law

The Problem: A small metal bead, labeled A, has a charge of 25 nC. It is touched to metal bead B, initially neutral, so that the two beads share the 25 nC charge, but not necessarily equally. When the

AP Physics question helppppp!!

As part of a physics experiment, you stand on a bathroom scale in an elevator. Though your normal weight is 650 N, the scale at the moment reads 750 N. (a) Is the acceleration of the elevator upward,

What accelerating potential difference would be required to give each of the following particles...

What accelerating potential difference would be required to give each of the following particles a de broglie wavelength of 2.0nm? a) a proton b)an alpha particle The answer is a)2.0x^-4 V b)2.57x

2 Variable solving problem.. 10 points for clear explanation

A rocket moves upward, starting from rest with an acceleration of +29.4 m/s^2 for 3.98 sec. It runs out of fuel at the end of the 3.98 sec but does not stop. How high does it rise above the ground? A

How do i solve this physics problem

Please explain the process I would take to solving this equation and provide a list of formulas used. A 75 kg box slides down a 25 degree ramp with an acceleration of 3.6m/s/s. a. Find the coefficient

Physics and circular motion - finding speed with rpm and radius

The blade on a table saw spins at 3450 rpm. Its radius is 12.5 cm. What is the speed of a tooth on the edge of the blade, in both m/s and mph?Please show how to get these?? Thanks!!-3450rpm = 3450rev/

In strength tests, when people pull buses, it the weight actually lower since their pulling it on wheels

Like when someone is trying to show of the strength of meditation or just a strongman competition of sorts and their pulling a pus, or multiple buses attached to a rope, is feel of the weight actually

Which will be hardest to pull a block across a cork tile, sandpaper, polished table or a lab bench

And which would be easiest?-The easiest would be a polished table, but the hardest would be a tossup between the cork tile and the sandpaper. It could be a very fine grit sandpaper, and a very soft co

Is friction useful in playgrounds

Science question. First answer may get 10 points!-Generally it is very useful, but if a child happens to fall from equipment or while running etc., friction is an enemy. It causes damage, the least of

Need physics help - circular motion, friction

A 5.0 g coin is placed 15 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of Us = 0.80 and Uk = 0.50. The turntable very slowly s