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One end of a cord is fixed and a small 0.440-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 1.50 m, as shown in the figure below. When ? = 17.0°, the speed of the object is 4.10 m/s.
What is the tension of the string at this moment?
A 24-V battery is connected in series with a resistor and an inductor, with R = 9.0 ? and L = 7.8 H, respectively, Find the energy stored in the inductor when the current reaches its maximum value
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
A hockey puck is struck with a force of 40N in an ice hockey arena. Assuming the ice provides a constant frictional force of 20N, determine the mass of the puck
To start an avalanche on a mountain slope, an artillery shell is fired with an initial velocity of 340 m/s at 47.0° above the horizontal, What are the x and y coordinates of the shell
15 mol of an ideal gas expands isothermally at 373 K to 12.5 its inital volume. Find the heat flow into the system
A 1.0 kg block of ice is resting at the top of a spherical ball of ice that has a radius of 1.0 meters. At what angle does the block of ice leave the surface of the sphere
A 95g ball of clay traveling at speed v0 hits and sticks to a 1.9kg kg block sitting at rest on a frictionless surface. What percentage of the ball's initial energy is "lost"
The position of an air-track cart that is oscillating on a spring is given by the equation x = 12.4 cos[(6.35 s-1)t] . At what value of t after t= 0.00s in the cart first located at x = 8.47 cm ?
A bird flies 3.05 km due west and then 3.26 km due north. Another bird flies 1.03 km due west and 1.16 km due north. Determine the angle with respect to the 2nd bird's displacement vector
What is the CD's moment of inertia for rotation about a perpendicular axis by the edge of the disk.
On a cold day, a heat pump absorbs heat from the outside air at 14°F (-10°C) and transfers it into a home at a temperature of 86°F (30°C)
The mass density of an object is 20.0 g/cc, and its mass is determined to be 104 g. What is the volume of the object
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