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An object weighing 300 N and the volume of 0.5 m3 in air is immersed in oil after being tied to a string connected to a balance. The scale now reads 275 N. Find the density of the oil.
In a solar water heater, energy from the Sun is gathered by water that circulates through tubes in a rooftop collector. The solar radiation enters the collector through a transparent cover and warms the water in the tubes; this water is pumped int..
A particle moves along the x-axis according to the equation x(t) = 2.0 + 3.0t2 - 1.0t3, where x is in meters and t is in seconds. What is the position of this particle when it achieves its maximum speed in the positive x-direction? What is its spe..
A given monocrystalline silicon solar cell has the following specifications: Isc=5A Voc=0.6V
Assume you have 2 mol of O2 gas. Determine how many coulombs of positive charge are contained in this gas in the atomic nuclei
You and your friends are doing physics experiments on a frozen pond that serves as a frictionless, horizontal surface. What was the speed of each person before the collision
A 1000 kg car carrying four 84 kg people travels over a %u201Cwashboard%u201D dirt road with corrugations 3.8 m apart, by how much does the car body rise on its suspension
An empty storage tank has a volume of 144 ft3. What is the buoyant force exerted on it by the air
For the circuit shown in the figure, the switch is initially open and the capacitor voltage is 80 V. The switch is then closed at time = 0. What is the charge on the capacitor when the current in the circuit is 33 A?
During a golf drive, the angular velocity of the driver is 20 rad/s just before impact with the golf ball. If the distance from the club head to the axis of rotation is 2.0 m
If a violin string transmits waves at 375 m/s and has 295 Hz as its fundamental frequency, what is the string's length.
When a capacitor, battery, and resistor are connected in series, does the resistor affect the maximum charge stores on the capacitors? Why or why not? What purpose does the resistor serve?
A negative lens has a focal length of -10 cm. An object is located 20 cm from the lens. determine How far from the lens is the image
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