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How much electrical energy is needed to heat the water in a hot water heater with a capacity of 40 gallons from 60°F to 110°F? How much will this cost at a rate of $0.13/kWh? Show your work and make sure to answer both questions.
A plank 2.00 cm thick and 17.9 cm wide isfirmly attached to the railing of a ship by clamps so that the restof the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
The work completed by friction on the rock when it moves from point to point at the bottom of the bowl has magnitude 0.22. Just as the rock reaches point, what is the normal force on it because of the bottom of the bowl .
A turbine that uses steam drives an electric generator. The inlet stream flows through a 10 cm diameter pipe to the turbine at 2.5 kg/s at 600°C and 1000 kPa. The exit steam discharges through at 25 cm diameter pipe at 400°C
A spaceship travels in a circular orbit around a planet. It applies abrupt thrust and increases its speed by a factor f. If the goal is to change the orbit from a circle to a parabola, what should f if the thrust points in the tangential direction?
A brick is initially 10.74 cm high and an aluminum can is initially 10.75 cm high. By how much must their temperatures be raised in order for the brick
Find the tension in each wire if the street light has a mass of 60.0 kg and what is the density of the piece of metal?
A charged particle moves through a velocity selector at a constant speed in a straight line. The electric field of the velocity selector is 3.65x10^3 N/C, while the magnetic field is 0.360 T. When the electric field is turned off, the charged part..
The kinetic frictional coefficient between the tires and the road is 1.0. Since the other car has the right of the way (there is no stop sign in the other direction but the speed limit is 25mph), so the accident seems to be your fault. But you fee..
Explain the forces an observer on the turntable would measure on the cannonballs after they leave the cannon. (Include a diagram showing clearly the direction of the forces) measure up to to the forces an observer who is not on the platform would ..
A drop of unknown liquid is placed at the point on a glass surface where internal reflection is occurring at ? = 48°. What is the refractive index of the liquid
A golf ball of mass 0.045 kg is hit off the tee at a speed of45 m/s. estimate the impulse imparted to the golf ball
An electron with speed v0 =4.16×106m/s is traveling parallel to and along the same direction as an electric field of magnitude E = 7.90×103N/C, How far will the electron travel before it stops
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