Recent content by physicsballer2

ya no clue what that means but thank you for trying

A physics student shoves a 0.5 kg block from the bottom of a frictionless 30 degree plane. The student performs 4 joules of work and the block slides a distance "s" along the inclined pane before it stops. Find the value of s W = (F * Cosθ) * D I plugged in 4 joules for work, multiplied .5 kg by...

I guess I solved wrong but got the correct answer? Because I did W = F * Cos60 W = 100 * Cos60 W = 50 joules I appreciate your patience

The final moment of inertia is 1/2 the initial, so .5I

The force in the direction it is being pulled? Which is equal to 50 Joules

A 60kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. What is the skater's final angular speed? I(initial)ω(initial) = I(final)ω(final) I used 60 kg as my inertia, is inertia and mass...

Potential Energy and Work done to lift object distance "h" The amount of energy needed to power a 0.10 kW bulb for 12 minutes would be sufficient to lift a 1 kg object how high? Power = work/time PE = mgh First I converted kw to watts which is 100 watts. Then converted minutes to seconds...

I thought I understood your answer but I do not think I did. I used W=FD 1250=F(25) F=50N That does not seem correct

Is there a separate equation I need to solve for the force in part A ? I assume the force they are asking for isn't given in the information. Referring to my question above should the 100 N be used for part B or should for force found in part A be used?

Is this the force that you are supposed to use for B or are you supposed to use the force that you are supposed to solve for?

A softball of mass .4kg is pitched at a speed of 24 m/sec, the batter hits it back directly at the pitcher at a speed of 20 m/s. The bat acts on the ball for .015 secs. A: What is the impulse imparted on the ball? B: What is the average force exerted by the bat on the ball? pi= mv pi=...

A child pulls a wagon with a force of 100N on a rope that makes a sixty degree angle with a horizontal floor. He pulls the wagon a distance of 25 meters along the floor. A: how much force is done in the direction that the wagon moves? B: How much work does the child do? W = FD W = FDCosθ...