Recent content by kgianqu2

You honestly didn't help at all. I figured it out on my own, thanks a lot. The worst help ever. The answer that I had was basically right, I just had to take out the variable b for the first part, and a for the second part. But thanks for asking where I got the equation from.

A) A thin, rectangular sheet of metal has mass M and sides of length a and b. Find the moment of inertia of this sheet about an axis that lies in the plane of the plate, passes through the center of the plate, and is parallel to the side with length b. Express your answer in terms of given...

While a roofer is working on a roof that slants at 44.0 degrees above the horizontal, he accidentally nudges his 88.0 N toolbox, causing it to start sliding downward, starting from rest. If it starts 4.15 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches...

A pickup truck is carrying a toolbox, but the rear gate of the truck is missing, so the box will slide out if it is set moving. The coefficients of kinetic and static friction between the box and the bed of the truck are 0.305 and 0.700, respectively. Starting from rest, what is the shortest...

That's all that the problem gives. I assume it just means one drop of blood that is in the arm. Also I need to find: What force would the blood vessel exert if the arm were not swinging?

While a person is walking, his arms (with typical lengths 70 cm measured from the shoulder joint) swing through approximately a 45 degree angle in 0.5 s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. Find the magnitude of the force that...

When I answered 4.00m/s, mastering physics said it was correct. I am not sure how to get time, but is v_x=36.7?

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0 above the horizontal, some of the tiny critters have reached a maximum height of 58.7 above the level ground. A)What was the takeoff speed for such a leap? I got 4.00 m/s which was...

Thank you!

A rookie quarterback throws a football with an initial upward velocity component of 16.5 and a horizontal velocity component of 18.3 . Ignore air resistance. A)How much time is required for the football to reach the highest point of the trajectory? I got 1.68s which is correct B) How...

Correction: my first post should say, 41 degrees clockwise from the -y-axis)

I kind of worked backwards since I knew that the angle is 229 degrees (41 degrees clockwise from the -y axis). And I know that the x=-15. I took tan(229) which = 1.15, which should be the fraction of the y length over the x length. Since I know the x=-15 I just solved for y to get -13.0. And...

Vector A is in the direction 41.0 degrees clockwise from the y-axis. The x component of A is = -15.0 . A)What is the y component of vector A? B)What is the magnitude of vector A? I got -13.0m for part a, and 19.8m for part b, but mastering physics says they are wrong. Any ideas?

Yes, but it I got the answer. It had to be subtracted from 360. Thank you anyway.

That worked, thank you so much. But why did it have to be subtracted from 360?