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Student C and D push on a box at the same time. The students are only pushing horizontally. No one pushed down or up on it. There is no friction. Student C pushes with a force of 14 Newton to the North. Student B pushes with a force of 63 Newton to the west. The box accelerates with a magnitude of 4.30 m/s2. Find the magnitude and direction of the net force on the box?
A 62-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. How fast is the astronaut moving after he throws the mallet
A dynamite blast at a quarry launches a rock straight upward, and2.5 s later it is rising at a rate of 18 m/s. Assuming airresistance has no effect on the rock, calculate its speed(a) at launch and (b)5.3 s afterlaunch
The wavelength associated with the cut-off frequency for silver is 325 nm. Find the maximum kintetic energy of electrons
demonstrate that the ground state wave function of a particle in an infinitely deep box is an eigenfunction of the
How to find dielectric constant of paper , teflon ,rubber , silicon and concrete or any other 5 mediums and compare their values with standared values
A photon emitted as a hydrogen atom undergoes a transition from the n = 5 state to the n = 2 state. The energy of the ground state is 13.6 eV. Find the frequency of the emitted photon
a block of mass m 10 kg is pushed across a rough table with a force applied at an angle of 28o with respect to the
A cup of newly brewed 330 g cofee is to hot to drink when served at 88 degree celcisus. What is the mass of the ice cube needed in order to cool the coffee to a pleasant 50 degree celsisus
What is the terminal speed for an 79 skier going down a 36 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.8 m tall and 0.50 m wide.
A 2.41 kg block and a 4.82 kg block are initially at rest on a frictionless, horizontal surface, with a compressed spring of negligible mass between them. How much does the kinetic energy of the system increase
An astronaut weighs 7*10^2 N on the surface of the earth (M earth=5.98*10^24 kg). What is her weight 7.70*10^6 m above the earth.
an underground pipe carries culinary water to a home at a volume flow rate of 5 galmin. determine the flow rate in
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