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A mass of 1.62 kg stretches a vertical spring 0.315 m. If the spring is stretched an additional 0.130 m and released, how long does it take to reach the (new) equilibrium position again?
The current is 5.50 A. A second resistor is added in series, and the current falls to 4.23 A. What is the resistance of the second resistor?
If 60 billion neutrinos per second rain down on one square cm of the surface of the Earth, how many neutrinos per second rain down on one square cm of the surface of Saturn?
In one particular car in the chain, the car has a mass M = 122 kg, the first passenger has a mass m1 = 55.2 kg, and the second passenger has a mass m2 = 68.8 kg. If the chain of cars slows from 26.5
A 55 Ω and 65 Ω resistor are wired in series in a circuit that contains a 12 V battery. (a) What is the equivalent resistance of the two resistors? (b) How much current is flowing in th
Find an expression for the capacitance per meter of a coaxial cable. Assume that the insulating material between the cylinders is air.
A 7.6 kg chair is pushed across a frictionless floor with a force of 42 N that is applied at an angle of 22° downward from the horizontal. What is the magnitude of the acceleration of the chair
A wooden block of mass 29.0 kg sits on a horizontal table. A wire of negligible mass is attached to the right side of the block and goes over a pulley (also of negligible mass, and frictionless), w
Find the magnitude of the electric force exerted by one sphere on the other.
A thin, light wire is wrapped around the rim of a wheel, as shown in the following figure. The wheel rotates without friction about a stationary horizontal axis that passes through the center of th
Find the point (coordinate) between these two charges where a charge of +3.10 × 10-9 C should be placed so that the net electric force on it is zero. Answer in units of m.
If the cylinder does not rotate and the bucket hangs straight down, what is the magnitude of the torque the bucket produces around the center of the cylinder?
An electric motor rotating a workshop grinding wheel at a rate of 9.90 101 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.70 rad/s2.
A cube of ice is taken from the freezer at -5.6 and placed in a 94g aluminum calorimeter filled with 314 of water at room temperature of 20.0 . The final situation is observed to be all water at 17
What is the ideal mechanical advantage of a ramp if its length is 4.0 m and its higher end is 0.5 m above its lower end?
(a) What is the velocity of the boat at t = 20.85 s? (b) Find the total displacement of the boat.
Calculate the x component of the angular momentum of the barbell due to rotation about its own center. Find the y component of the same vector.
A small object with a mass of 390 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 2.00 cm. If the
A constant torque h3,-6,-8iNm relative to location A acts on the particle. At t = 10.1 s, what is the magnitude of the angular momentum of the particle relative to location A?
A person of mass 76 stands at the center of a rotating merry-go-round platform of radius 2.8 and moment of inertia 920 . The platform rotates without friction with angular velocity 1.7. The person
A vertical scale on a spring balance reads from 0 to 160N. The scale has a length of 12.5cm from the 0 to 160N reading. A fish hanging from the bottom of the spring oscillates vertically at a frequ
The heightened physical arousal that characterizes the fight-or-flight response involves the _____ branch of thenervous system.
An antelope moving with constant acceleration covers the distance 79.0 m between two points in time 6.20 s. Its speed as it passes the second point is 16.0 m/s. What is its speed at the first point?
What is the electric potential energy of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.
Assume that the coefficients of expansion are constant over this temperature range. If the cylindrical pistons are 25.000 in diameter at 20.0 , what should be the minimum diameter of the cylinders a