Tyger2020

How much work is required to compress a spring, k = 33.3 N/m, from its equilibrium point at x = 0.0 m to x = 5.0 m? I am not sure how to approach a problem like this - what equation do I use? I know work = Force * Distance, but these aren't exactly terms...

A 2.20 kg pendulum starts from a height of 5.00m. It swings back and forth through one whole oscillation but only returns to a maximum height of 4.75m. How much negative work was done on the pendulum during the first entire oscillation?

A 2.20 kg pendulum starts from a height of 5.00m. It swings back and forth through one whole oscillation but only returns to a maximum height of 4.75m. After a long time the pendulum eventually winds down and comes to a stop. How much total negative work...

This is part of a lab with a mass attached to a spring, and the mass attached is of unknown weight. Which of the following can you measure to find one of the unknown masses? You can select more than one. a) the distance the mass stretches the spring b) th...

A spring loaded 100g dart gun is affixed at rest on a 150g frictionless cart. It fires a 25g dart with a velocity of 30 m/s. What is the final momentum of the system? I'm confused as to whether or not I should use conservation of momentum or center of mas...

The cannon on a pirate ships shoots cannon balls with a speed of 350 m/s (the muzzle velocity). The cannon can be adjusted to shoot at any elevation above the horizontal. The barrel is 2m long and the mass is 5 kg. Ignoring air resistance and assuming the...

I have a big online test and would really appreciate if you could please check my answers before I submit them (I only have 1 try) Two equivalent masses are attached by a rope that hangs over a pulley. Since the coefficient of friction is less than 1, the...

A torque of 77.7 Nm causes a wheel to start from rest, completes 5.55 revolutions and attains a final angular velocity of 88.8 rad/sec. What is the moment of inertia of the wheel? I am trying to find angular acceleration first. How do I find it given this...

Density = mass/volume, so density = 500/2500 = 0.2 g/ cm3!

Let x = length of shortest piece. You want to express everything in terms of x, then add them in an equation you can solve for x. Longest piece = 40 + x. Medium piece = (40 + x)/2 OR 20 + 1/2x. Shortest piece = x. You know all the pieces combined = 120 in...

Also just thought I should clarify where I got the 2.5x from - x + x = 2x and 1/2x = .5x, so 2x + .5x = 2.5x. I didn't want it to seem like I said that ONLY 1/2x simplifies to 2.5x - that's x + x + 1/2x!

Chloroplasts! Depending on your level class, you might need to know more about the inside of a chloroplast...if so, google can get you started.

Problem isn't worded so clearly, but I think it is asking for the Greatest Common Factor of 56 and 64. e.g. what is the greatest number that divides evenly into both 56 and 64? ----------------------------------------- The answer is 8! 56/8 = 7, and 64/8...

Thank you!

Thank you!

A. a = 46c --> Divide off 46. c = a/46. B. a = 322 square meters. a = 46c, so 322 = 46c. c = a/46, so c = 7. 7 circuits are required.

I think answer D) This is indeed a confusing question, but I'm assuming the plot has price on the X (horizontal) axis and cell phone brand on the Y (vertical) axis. You can try sketching it out to understand... Let's say there is a value $90 for price. If...

Assuming that you must pay this for each dog, then you're multiplying each dollar amount by x. Ex: if you buy 1 dog, you pay 80 + 65 + 50. If you adopt 2, you pay (80 * 2) + (65 * 2) + (50 * 2). So the answer is 80x + 65x + 50x... BUT! You can simplify by...

1a: the numbers are 4, 6, 8, 10, 12, and 14. 4 = 2 + 2; 6 = 3 + 3; 8 = 5 + 3; 10 = 5 + 5; 12 = 7 + 5. If you don't know how to do this, it's probably because you don't understand prime numbers so well. Prime numbers are numbers only divisible by 1 and its...