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What is the speed of the block just before it hits the spring? (Assume that friction is negligible.) (in m/s)
If the skier has a mass of 60kg and the force of friction retards his motion by doing 2500 j of work, what is his speed at the bottom of the slope?
The Maxwell-Boltzmann distribution of velocities v for a unit volume of an ideal gas can be written in the form
If the gravitational potential energy U of the rock-Earth system is zero at the bottom of the hill, what is the value of U just before the slide?
Assuming that the ball is always thrown at the same initial speed, at what angle should the outfielder throw the ball to make it go the same distance D.
A projectile is given a vertical upward velocity Vo = 10000 m/sec at Earth's surface. Neglect air friction.
A patient is to receive an intravenous injection of medication. In order to work properly, the pressure of fluid containing the medication.
Consider two spin systems A and A' placed in an external field H. System A consist of N weakly interacting localized particles of spin 1/2 and magntic moment u
If 3.75 X 10^-4 J of work are required to move 13.7 microc of charge from one point to another, what is the electric potentail difference the two points.
Designing a roler coaster is very tricky. Patrons of theme and amusement parks want to be thrilled , but generally do not want to be injured.
Say you saw the following interference pattern due to air between two glass slides:
A skier is pulled by a tow rope up a frictionless ski slope that makes an angel of 12 degree with the horizontal. The rope moves parallel to the slope.
A ball is launched with initial speed v from ground level up a frictionless slope. The slope makes an angle theta with the horizontal.
A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic.
How far do they slide? The coefficient of kinetic friction between football uniforms and Astroturf is 0.350. Give answer in cm.
A 3.0-cm-tall domino is located 100cm from a concave spherical mirror of R = 30cm. Locate the position of the image and find the magnification?
A block of weight mg sits on an inclined plane as shown. A force of magnitude F is applied to pull the block up the incline at constant speed.
Exercise requires a food input about four times your mechanical work output (in other words, about 25% efficiency).
A microphone is located on the line connecting two speakers that are 0.524 m apart and oscillating 180° out of phase.
Sunlight incident on a screen containing two long narrow slits 0.2mm apart casts a pattern on a white sheet of paper 2m beyond.
Use work and energy to find the length of a ramp that will stop a 15,000 kg truck that enters the ramp at 35 m/s (approximately 75 mph).
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.9e10^6 N, one at an angle 12.0 degrees west of north.
The coefficient of kinetic friction is mu_k. During time interval t, the sled moves a distance s, starting from rest.
What is the angle of incidence of the ray that is just totally internally reflected at the core-cladding interface?
A 1.5-kg box that is sliding on a frictionless surface with a speed of 12 m/s approaches a horizontal spring. The spring has a spring constant of 2000 N/m.