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A record was set for stair climbing when a man ran up the 2100 steps of the Empire State Building in 10 min and 10 sec. If the height gain of each step was 0.2 meter, and the man's mass was 58.0 kilogram, find his average power output during the climb?
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A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.
The solar panels on the roof of a house measure 4.0 m by 6.2 m. Assume they convert 12% of the incident EM wave's energy to electrical energy. What average power do the panels supply when the incident intensity is 0.80 kW/m2 and the light is incident..
A(n) 716 kg elevator starts from rest. It moves upward for 4.36 s with a constant acceleration until it reaches its cruising speed of 2.14 m/s. Find the average power delivered by the elevator motor
Some space invaders build a giant gun on the surface of their planet. What must the muzzle velocity for the projectile to escape the planet's gravitation when fired perpendicular to the horizon
In 0.675 s, a 6.80-kg block is pulled through a distance of 4.10 m on a frictionless horizontal surface, starting from rest. By how much does the spring stretch
A sample of an unknown substance appears to weigh 15.1 N in air and 9.18 N when immersed in a solvent with density 0.945 g/mL. Find the density of the sample
An ideal gas initially at 324 K is compressed at a constant pressure of 27 N/m2 from a volume of 3.0m3 to a volume of 1.8m3. what is the final temperature of the gas
Three 25.0-ohm resistors are connected in series across a 60.0-V battery. What is the equivalent resistance of the circuit and What is the current in the circuit
A total charge of 7.05 10-6 C is distributed on two different small metal spheres. How much charge is on each sphere
A certain mass, when hung from a certainspring, causes the spring to stretch by an amount h compared to its equilibrium length. If the mass is displaced vertically from thisequilibrium, it will oscillate up and down with a period Tosc. Find the pe..
A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, What are the magnitude and direction of the electric field
How far south of his starting point will he reach the opposite bank.
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