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The Sun radiates energy at a rate of regarding 4 x 10^26 W (a) At what rate is the Sun's mass decreasing? (b) Estimate how long the Sun could last if it radiated persistently at this rate. Mass of the sun is 1.99 x 10^30 kg.
An insulated container of negligible mass holds 0.200 kg of water and 0.05kg of ice in thermal equilibrium at atmospheric pressure. calculated the specific heat capacity c of heat
A solid sphere rolls without slipping from rest down a plane 4.00 m long inclined at angle of 42.0 degree with respect to the horizontal. Determine the speed at the bottom of the incline
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
A uniform steel bar swings from a pivot at one end with a period of 1.3s. How long is the bar
A particular spring has a force constant of 2.2×103N/m. How much mass would have to be suspended from vertical spring to stretch it the first 5.5cm?
Magnetic measurements have been made on some lavas found at 60*N, 90*W. what is the subsequent error in the calculated paleolatitude
A spherical brass shell has an interior volume of 1.51 x 10-3 m3. Within this interior volume is a solid steel ball that have a volume of 0.53 x 10-3 m3. What is the volume of mercury that spills out of the hole
A circular loop of wire lies flat on a level table top in a region where the magnetic field vector points straight upward. As viewed from above, in what direction does the induced current flow in the loop of wire
In many locations, such as Lake Washington in Seattle, floating bridges are preferable to conventional bridges. Such a bridge can be constructed out of concrete pontoons, which are essentially concrete boxes filled with air, Styrofoam, or another ..
Find the triple point pressure of a constant-volume gas thermometer if its pressure is 0.399 atm at a temperature of 109° C
An insulated Thermos contains 110cm3 of hot coffee at 90 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Care for the coffee as thoug..
when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. Illustrate what is the total work done by the drag force while the ball is in the air?
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