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(a) Why is collecting water from an overflow can less accurate than other methods of determing density?
(b) How much would 25 kg of gold weigh? (Au = 19,300 kg/m3)
(c) What would be the apparent mass of 25 kg of gold if it were underwater?
The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50.0° angle with the ground. Explain how far up the ladder can an 720 N person climb before the ladder begins to slip?
Three moles of a monatomic ideal gas are heated at a constant volume of 2.23 m3. What is the change in the temperature of the gas
Find the transmission coefficient for a finite square well for a bound state(the energy is greater than zero) where the potential is described in the figure
Assume that positive -axis is directed toward the direction of motion of cart 2.
A fire engine moving to the right at 40 m/s sound its horn (frequency = 500 Hz) at the two vehicles shown in the figure. The car is moving to the right at 30 m/s, while the van is at rest. (a) What frequency is heard by the passenger in the car?
How much energy, in Joules, is stored then in the capacitor? What if we fill the space between the plates with nylon whose dielectric constant ∈ is 5.8 , what would be the new capacitance in pF?
If the displacement of a harmonic oscillator is given by y= 3.5 sin(10t), where the units of y are meters and t is measured in sec. Evaluate what is the frequency
Heavy rains have flooded your professor's basement to a depth of 6 cm. This basement is 12 m by 10 m in area. You have a hose of diameter 1.7 cm and can run the hose from the water in the basement
Suppose that the magnetic field of the Earth were due to a single current moving in a circle of radius 2910 km through the Earth’s molten core. The strength of the Earth’s magnetic field on the surface near a magnetic pole is about 6.0·10–5 T. Ho..
An old Chrysler with mass 2000 kilogram is moving along a straight stretch of road at 88 km/h. Find how fast is the center of mass of the two cars moving
A wheel starts at rest and takes 3.00 s to rotate 37.0 revolutions at which point its angular velocity is 98.0 rad/s. What is the constant angular acceleration of the wheel
consider a hot-air balloon. the deflated balloon gondola and 2 passengers have a combined mass of 315 kg. when inflated
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