Homework Statement
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest. It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air resistance is negligible...
Homework Statement
Two hockey pucks collide with each other. Puck 1 has a mass of 0.050 kg and an initial velocity of 5 m/s in the x direction. It collides with puck 2 which is initially at rest and has a mass of 0.10 kg. The collision isn't head-on. After the collision, Puck 1 flies off in...
Ah, okay. Then since the the frictional force would be opposite the displacement the angle would be 180? That makes it
W = (85kg*9.8m/s2 - 240sin20) * 0.200(cos(180))*8m
W = -1200 J
Homework Statement
2.40 *102 N force is pulling 85.0 kg refrigerator across a horizontal surface. The force acts at an angle of 20.0 degrees above the surface. The coefficient of kinetic friction is 0.200 and the fridge moves a distance of 8.00 m. Find the the work done by the kinetic...
2. Which occupies the greatest volume: 1 g of ice, 1 g of liquid water, 1g of water vapor?
- They are all the same mass, but are they the same volume?
9. What is the common name for dioxygen oxide? Recheck this one and the next~
a. carbon dioxide escapes upon the opening of a soda can.
Yes, the atomic number would be in the subscript(bottom) to the left, and the atomic mass as the superscript(top). For example, carbon-13 would be written as 136C.
Homework Statement
A boat is 400 kg and cruising along with a constant speed of 4.0 m/s in a direction 30 degrees north of east. The boat suddenly begins to feel a force from the wind that is 45 degrees north of east and has a magnitude of 100N. After a 10 second period what is the velocity...
Use dimensional analysis. I believe you're trying to find the amount of time it takes for light to travel over 93x10^6 miles, thus converting from miles to minutes.