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A certain substance has a mass per mole of 36 g/mol. When 319 J is added as heat to a 35.0 g sample of this material, its temperature rises from 16.0°C to 36.0°C.
(a) What is the specific heat of this substance? (J/kg·K)
(b) What is the molar specific heat of the substance? (J/kg·K)
(c) How many moles of the substance are present? (mol)
A string is attached to a rigid support and the cylinder allowed to drop from rest. Find out the acceleration of the cylinder.
What is the total charge of all the electrons in a 14 kg bar of zinc? (Zinc has 30 electrons per atom and an atomic mass of 65 u.)
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
A 3000 pound car crashes into a concrete jersey barrier moving 3 sections (totaling 12,000 pounds) laterally 24 inches. How fast was the car going on impact.
The spacecraft's mass is 291 kg and the thrust (force) of the rocket engines is 59 N. If the speed of the spacecraft should be decreased by 128 m/s, how long the engines should be fired. (Ignore the change in mass as a result of the rocket engines..
A cannon tilted upward at = 33 fires the cannonball with a speed of 99. At that instant, what is the component of the cannonball's velocity parallel to the ground.
A 200 g block is pressed against a spring of force constant 1.40 kN/m until the block compresses the spring 10 cm. The spring rests at the bottom of a ramp inclined at 60.0 degrees to the horizontal.
A car is driven 125.0 km west and then 65.0 km southwest. What is the displacement of the car from the point of origin (magnitude and direction).
make Use of a 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
The magnitudes of the four displacement vectors shown in the drawing are A = 20.0 m, B = 11.0 m, C = 12.0 m, and D = 21.0 m.
Suppose a light bulb is rated for a voltage of 1.8 V. At this voltage is draws a current of 0.054A, Using Ohm's Law, determine the resistance of the bulb
There are two protons of a helium atom seperated by 1.00e-15m, If the protons were allowed to move, what would be their initial acceleration due to the electric force between them
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