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A car parked in the sun absorbs energy at a rate of 540 watts per square meter of surface area. The car reaches a temperature at which it radiates energy at this same rate. Treating the car as a perfect radiator (e = 1), find the temperature.
The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maximum speed
A spider has a mass of 0.70-g and is hanging from rest on a 20-cm long thread of 0.0020-mm diameter of silk, If the string is whirled in a circle at a rate of 2 revolutions per second, what is the minimum and maximum time for vibrational information..
An electronic device dissipating 30 W has a mass of 20g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, throughout which it cools to the ambient temperature of 25 o C.
An unknown capacitor is charged by a 100-V source through a 1 M? resistor. determine the capacitance of the capacitor
A microwave oven with microwaves 12.2 cm long has a power output of 760 Watts. Find the number of photons emitted per second
A flywheel with a radius of 0.500m starts from rest and accelerates with a constant angular acceleration of 0.500rad/s2. Compute the magnitude of the radial acceleration of a point on its rim after it has turned through 60.0
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
Electric field lines from a charged flat plate in air to the parallel flat plate with the opposite charge (a dc capacitor). Within this space, small (compared to the size of the plates) rectangles of non -conducting and conducting materials.
Ethyl alcohol flows through a horizontal tube of diameter 3.00 cm that is joined to a second horizontal tube of diameter 1.62 cm. What is the speed of flow in the first tube
A piece of moon rock reads 3.261 N on a scale when in air, but 2.074 N in a fluid having a density of 870 kg/m3. What is the density of the moon rock in kg/m3
If a 25.00 gram bullet with a speed of 290 travels 14 into a tree before stopping, what's the average force exerted to stop bullet.
The escape velocity of a bullet from the surface of planet Y is 1759.0 m/s. Calculate the escape velocity from the surface of the planet X
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