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A piece of cheese with a mass of 1.22kg is placed on a vertical spring of negligible mass and a force constant k= 1500N/m that is compressed by a distance of 17.6cm.
On an essentially frictionless, horizontal ice rink, a skater moving at 4.0 m/s encounters a rough patch that reduces her speed by 42% due to a friction force that is 22% of her weight. Use the work
Oppositely charged parallel plates are separated by5.29mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates?
A weight of 10 N is dropped from a height of 1.2 m onto a spring (cushion pad). If the spring has an elastic force constant of 40 N/m by what amount will the spring compress? (no, this is not a simp
A cart of mass Mc is being pulled by an object of mass Mw. Assume Friction is negligible. a) How many forces are acting on the cart?
When Neil Armstrong climbed down to the surface of the Moon via the 3.5-m tall ladder of the Lunar Lander, his potential energy changed by 1260 J. If his mass was 79 kg, what was the mass of his sui
A parallel-plate vacuum capacitor with plate area A and separation x has charges +Q and -Q on its plates. The capacitor is disconnected from the source of charge, so the charge on each plate remain
Calculate the work done on the block by the spring during the motion of the block from its initial position to where the spring has returned to its uncompressed length.
Assume that the eagle's eye detects light that has a wavelength of 550 nm in vacuum. How much time passes until the eagle sees the mice as separate objects?
A ski tow operates on a slope of angle 14.9 of length 300 . The rope moves at a speed of 12.1 and provides power for 48 riders at one time, with an average mass per rider of 68.0 . Estimate the powe
An immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is rated at 350 W . A) What is the resistance of the heater? I know its 120^2/350= 41 Ohms
The radius of electron is 10^ -18 m . What is the minimum momentum transfer ( order of magnitude) required to resolve the structure of an electron? What beam energy would be required if an electron
A solenoid is wound with a single layer of insulated copper wire of diameter 2.700 mm and has a diameter of 4.000 cm and is 1.200 m long. Assume that adjacent wires touch and that insulation thickne
A small coil has a cross section of 5.5 cm2 and consists of 18 turns of wire. If the loop carries a current of 100 mA, what is the torque required to hold the loop at right angles to a field of B =
A copper wire has diameter 0.140mm and length 11.0cm . It's in a horizontal plane and carries a current of 2.35A . The density of copper is 8920 kg/m^3. Find the magnitude of the magnetic field need
A C-glass filament reinforced epoxy composite contains 65% vol filaments and has a density of 2.24 Mg/m^3. If the C-glass density is 1.20 Mg/m^3, what is the epoxy density? Please show your work.
A pump for a power plant takes in saturated water at 1.5 psi and boosts its pressure to 1500 psi. The pump has an adiabatic efficiency of 0.92, Calculate the irreversibility and the second law effic
A turbine accepts steam at 2.0 MPa and 627 degrees C and discharge at 20 kPa. Every second 4 kg of superheated steam passes through the turbine. Calculate the maximum power rating of the turbine.
Gas is stored in a rigid container at 7 degrees C. The volume of the container is 2 cubic meters. The initial gauge pressure is 0. The gas is heated and reaches a gauge pressure of 0.8 MPa. Atmosphe
One billiard ball is shot east at 2.4 m/s . A second, identical billiard ball is shot west at 0.90 m/s . The balls have a glancing collision, not a head-on collision, deflecting the second ball by
A 30.0 g ball of clay traveling east at 7.50 m/s collides and sticks together with a 30.0 g ball of clay traveling north at 3.50 m/sa
A 2.16-µF and a 3.60-µF capacitor are connected to a 65.4-V battery. What is the total charge supplied to the capacitors when they are wired in the following ways?
The filament in an incandescent light bulb is made from tungsten. The light bulb is plugged into a 120 V outlet and draws a current of 1.16 A. If the radius of the tungsten wire is 0.0052 mm, how lo
An industrial proposer claims that he can extract 50 kw power by drawing 3000 kJ of hear per minute from a high temperature reservoir at 950 degrees C and dumping heat to a reservoir at 25 degrees C
Two identical capacitors store different amounts of energy: capacitor A stores 2.4 x 10-3 J, and capacitor B stores 6.7 x 10-4 J. The voltage across the plates of capacitor B is 12 V. Find the volta