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Physics question need help

A rocket is shot up with an initial speed of 45.0 m/s. How long does it take the rocket to reach its highest point? How high does the rocket rise above the ground? An acorn falls from a branch that i

What is the magnitude of acceleration using pulley

A mass m1 = 6.9 kg rests on a frictionless table. It is connected by a massless and frictionless pulley to a second mass m2 = 3.7 kg that hangs freely. a) what is the magnitude of acceleration on blo

A physics Question..HELP!

what is formed when nitric acid and sulfuric acid reacts or combine?-This isnt a physics question. Its a chemistry question. People are getting so confused between the sciences. There is no reaction

Physics, magnitude and velocity

Thex-component of a velocity vector that has an angle of 31degrees to the +x-axis has a magnitude of 5.8m/s. What is the magnitude of the velocity? What is the magnitude of the y-component of the vel

How to find acceleration

A car has initial velocity of 10 m/s toward top of an incline plane, which is inclined at 60 degrees... it has co effecient of friction of 0.5 how would I find the acceleration in this problem?I am

Cons. of Mech. Energy Problem

A simple pendulum has a length of 0.75 m and a bob of mass 0.6 kg. When the string is at 30º to the vertical, the bob has a speed of 2 m/s. (a) What is the maximum speed of the bob? (b) What is the m

Angular motion and tension problem.

A 900 g ball moves in a vertical circle on a 1.08 m-long string. If the speed at the top is 4.40 m/s, then the speed at the bottom will be 7.85 m/s. What is the tension in the string when the ball is

Physics Projectile Help

Given these two formulas solve for theta 0=24+400*sin(theta)*T+(1/2)*(-9.81)*((… and 12874.752=400*cos(theta)*T Please show how to arrive at answer, (I know what the answer is (25.9236685 degrees)

Impenetrable shield vs sword that can penetrate anything

What would happen?-Mutually exclusive, hence meaningless question.

Why does sound increase by 6dBs when the amplitude of the pressure is doubled

Its on one of the slides in my physics lecture, but cant work out why. Think it has something to do with an 3dB increase in volume if sound is doubled, but not sure.-the dB scale measures intensity of

A block slides down a track...

A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track (as shown in the figure below).It leaves the track horizontally, flies th

Will firework explosion emit EMP

And when close enough... knock out a electronic device?-No.Standard fireworks are percussive; sending a shockwave through the air.To have an electromagnetic effect requires a detonation that involves

College Physics question help! Best answer

A 25.5 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley (Fig. 4-57). The coefficient of static friction between the table and the block is 0.485 and the co

Physics, magnitude and velocity

Thex-component of a velocity vector that has an angle of 31degrees to the +x-axis has a magnitude of 5.8m/s. What is the magnitude of the velocity? What is the magnitude of the y-component of the vel

What is the difference b/w anti-nutrino and nutrino particles.

Their polarities are reversed, so while a neutrino particle has a polarity of + charge or - Charge, the anti-neutrion has the oppsite. This is true for all antimatter.-I feel neutrino is named so beca
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