You walk into an elevator, step onto a scale, and push the "up" button. you recall that your normal weight is 639 n. when the elevator has an upward acceleration of magnitude 2.90 m/s2, what does the scale read?

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.3 x 10^5 N. In being launched from rest it moves a distance of 87 m and has a kinetic energy of 4.

If the L-shaped rod has a moment of inertia I=9kgm2, F1=12N, F2=27N, and again F3=0, how long a time t would it take for the object to move through 45∘ (π/4 radians) ?

If thomson's model of the atom is correct, what would rutherford have seen in his experiments

A balloon has a volume of 3.00 liters at 24.0°c. the balloon is heated to 48.0°c. calculate the new volume of the balloon.

A person drives 70 km/h in 1 hour to the east, then 80 km/h for another hour to the east. What was the average velocity for those 2 hours?

The same constant force, F, is applied to two blocks. The first block has a mass of M and the second block has a mass of 2M. Both blocks are initially at rest and the force acts on each of them for the same period of time, t.

Which of the following is an example of the strong nuclear force acting in an atom? A. A proton repelling a proton B. A neutron attracting a neutron C. A neutron repelling an electron D. An electron attracting a proton

Does the air in our atmosphere have mass?

Your instructor hands you a closed flask partly filled with room-temperature water. When you hold it, the heat transfer between your bare hands and the flask causes the water to boil. Quite impressive! How is this accomplished?

Drag each label to the correct location on the chart. Sort the items based on whether they are simple machines or compound machines. sewing machine pair of tongs fishing rod and reel seesaw wheelbarrow crane Reset Next