Physics

Friction Problem Help

I honestly have no idea what to do.I have a general idea, but im not getting the second part of the question right.please help! Two blocks of masses of 40.0 kg and 20.0 kg are stacked on a table with

What would happen to a object that is placed in the middle between two equally sized objects, projecting...

increasing (but equal) gravitational forces? The object in between the two forces is a cube of Adamantium.-if the masses of the planets were sufficiently large and they were close to the object, it i

How can I prove that the sum of the torques of a non rotating system is zero

T1-T2=0 F1r1=F2r2 F1r1-F2r2=0-The summation of torques will be equal to the product of the moment of inertia (a constant) and the angular acceleration.If there is no rotation the angular acceleration

Add these basic vectors

An acceleration of 10m/s² up and an acceleration of 2m/s² horizontal. Thanks.-kuiperbelt2003 has given correct answer,-the magnitude of the resultant is found using the pythagorean theorem resultant

What is the magnitude of the impulse on the ball

A .06 kg tennis ball traveling at 30 m/s strikes a wall and rebounds in the opposite direction with 81% of its initial kinetic energy. A clearly written formula (with labels) to solve this question w

Physics question.. please help

A cannon ball is fired from ground level with a speed of 68.0 m/s at an angle of 34 deg. above the horizontal. A 13.0 m tall wall is located 125 m away from the cannon. a) By how much does the cannon

Physics help cant figure this out ):.

A boat can travel 2.60 m/s in still water. Figure 3-30 (a) If the boat points its prow directly across a stream whose current is 1.50 m/s, what is the velocity (magnitude and direction) of the boat r

Physics pulling sled problem.

A 185N sled is pulled a distance of 180m. The task requires 5200J of work by frictioin and is done by pulling a rope at an what angle? Coefficient of friction 0.30 PLEASE SOLVE :(-Im going to assume

Physics bullet Vs Stone

0.110kgstone rests on a frictionless, horizontal surface. A bullet of mass 9.50g , traveling horizontally at 310m/s , strikes the stone and rebounds horizontally at right angles to its original direct

For a mass oscillating on a spring, is the velocity of the mass constant

Same question as the title. Is the velocity of the mass constant on an oscillating scale? How do you know? Thanks.-No.Otherwise youd be able to cut the spring while it is in the middle of its behavio

(10 points)How many components are in velocity of a horizontal projectile

There can always be up to three components of velocity. Usually in projectile motion, there will be two, because we align one of the horizontal axes with the direction of horizontal motion.There is n

Physics problem help (Work, Energy, Power)

Hey everyone! I would appreciate it if anyone could help me out with any of this problems! Thanks 1. A cable lifts a 1200 kg elevator at constant velocity for a distance of 35m. What is the work done

A young kid with a huge baseball cap is playing catch with himself by throwing a ball straight up. How fast do

A young kid with a huge baseball cap is playing catch with himself by throwing a ball straight up. How fast does he throw it if the ball comes back to his hands 0.8 seconds later?-Since it comes back

The matter in the room distorted. Why

I was in english class on day, when suddenly the matter distorted. then it went back to normal. the whole thing only lasted a second or so. I even felt weird during/after. nobody really said anything,

Help!! Electric Field in three dimensions

Can someone be kind enough to walk me through how you calculate an electric field at a point in three dimensions, due to two separate charges in the three dimensions. The main part I am finding hard