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Q. Three astronauts, propelled by jet backpacks, push and guide a 137 kg asteroid toward a processing dock, exerting the forces, with F1 = 27 N, F2 = 55 N, F3 = 43 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative to the positive direction of the x axis) of the asteroid's acceleration?
Q. Three connected blocks are pulled to the right on a horizontal frictionless table by a force of magnitude T3 = 65.0 N. If m1 = 12.0 kg, m2 = 24.0 kg, and m3 = 31.0 kg, calculate (a) the magnitude of the system's acceleration, (b) the tension T1, and (c) the tension T2.
Compute the numerical value for acceleration
A drunk driver in a 1600 kg car plows into a 1500 kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 19 m before stopping. If the effective coefficient of friction is 0.78, how fast was the dru..
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
A Carnot air conditioner takes energy from the thermal energy of a room at 294 k and transfers it as heat to the outdoors, which is at 309 k. for eacg joule of electric energy needed to operate the air conditioner, how many joules are removed from..
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
Suppose that the speed of the water in the reservoir is zero, and that the water flow is steady. Overlook both air resistance and the height difference between the reservoir and the muzzle.
Find the induced current I in the resistor. A rolling axle, 1.30 m long, is pushed along horizontal rails at a constant speed v=2.91 m/s. A resistor R=0.475Ω is connected to the rails at points a and b, directly opposite from each other.
Write down the expression for net torque
Consider a large parallel plate capacitor with circular plates of radius R. suppose that the electric field between the plates is increasing.
A cord is wrapped around the rim of a solid uniform wheel 0.300 in radius and of mass 7.80 . A steady horizontal pull of 40.0 to the right is exerted on cord, pulling it off tangentially from the wheel. The wheel is mounted on frictionless bearing..
Calculate the shear stress of the crude oil at the walls, and plotting the velocity distribution graph for the same.
Does the pivot point (i.e., the triangle in the diagram upon which the ruler balances) exert a force on the ruler? Does it exert a nonzero torque about the pivot.
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