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A brick is initially 7.72 cm high and an aluminum can is initially 7.73 cm high. By how much should their temperatures be raised in order for the brick and the can to have precisely the similar height?
A disk of mass M and radius R spins on a horizontal axis during its center. Particle, mass m, is on the rim at the top. When it now starts to spin what is disks (a) angular speed at m's lowest point (b) force exerted with disk on m
A proton is located at a distance of 0.435 m from a point charge of +8.46 μC. The repulsive electric force moves the proton until it is at a distance of 1.80 m from the charge. Assume that the electric potential energy lost with the system is carried..
Two identical lead spheres are hung on thin threads in a vacuum. The temperature of one is 320 K and it radiates 6.0 W of thermal energy. The second sphere has a temperature of 325 K. How much heat does it radiate? At what wavelength is the peak ..
A 5.90 x 10-5 H solenoid is constructed with wrapping 79turns of wire around a cylinder by a cross-sectional area of 8.7x 10-4 m2. When the solenoid is shortened by squeezing the turns closer together, the inductance increases to8.80 x 10-5 H. Decide..
A basketball player passes the 0.60-kg basketball to another player with bouncing it off the court. The ball hits the court by a speed of 5.5 m/s at an angle of 67° from the vertical. If the ball rebounds with the similar speed and angle, what was th..
A 13 g projectile traveling 152 m/s penetrates into a 0.25-kg wad of putty and emerges plainly at28 m/s. If the putty is stationary on a frictionless surface when hit, how fast does it move after the projectile emerges?
Light containing two dissimilar wavelengths passes during a diffraction grating with 1000 slits/cm. On a screen 17.0 cm from the grating, the third-order maximum of the shorter wavelength falls midway among the central maximum and the first side maxi..
A yo-yo is made from two uniform disks, each with mass M/2 and radius R, associated by a light axle of radius r(R>r). Since the axle is nearly mass less, the total mass of the yo-yo is M. A light, thin string is wound several times around the axle.
A spaceship is approaching a space station at a speed of1.8 x 10 5 m/s. The space station has a beacon that emits green light by a frequency of 5.96 x 1014 Hz. What is the frequency of the beacon observed on the spaceship?
When a uranium nucleus at rest breaks apart in the process known as fission in a nuclear reactor, How much mass was lost in the process
The body contains many small currents caused by the motion of ions in the organs and cells. Measurements of the magnetic field around the chest due to currents in the heart give values of about 1.0 µG. how large is the current in the heart
A rock is dropped from a height of 100 m above the ground. How long after the ball is thrown will the objects be at the same height above the ground
An AC generator supplies 185 V peak voltage at 110 Hz frequency. How much power is dissipated in a resistor with R = 295 ? resistance connected to the generator?
A 230g baseball is pitched at 42m/s spinning at 40rad/s . You can treat the baseball as a uniform solid sphere of radius 4.0cm
A uniform rod of mass 3.20×10?2 and length 0.430 rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. Two small rings, each with mass 0.190 , are mounted so that they can slide along the rod.
consider a rigid dumbell with two masses each of mass m spaced a distance d apart. as a reminder the momentum of
In a nuclear experiment a proton with kinetic energy 3.5 MeV moves in a circular path in a uniform magnetic field. a)If the magnetic field is B = 1.1 T what is the radius of the orbit? b) What energy must an alpha particle (q = +2e, m = 4.0 u) and a ..
two stationary positive point charges charge 1 of magnitude 3.10nc and charge 2 of magnitude 1.75nc are separated
two workers push horizontally in the same direction on a 250 kg wooden crate that is on a wooden floor. What total force must they exert to start the crate moving
A 12 kg- hammer strikes a nail at a velocity of 8.5m/s and comes to rest in a time interval of 7.7 m/s. What is the average force acting on the nail
a block of mass m = 2.50 kg is pushed a distance of d = 2.20 m along a frictionless horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle of 25.0 degrees below the horizontal
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