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A clock of mass 200g is connected to horizontal spring that is on a frictionless surface . we apply a force of 120 N that compresses the spring by 30 cm and release the block from rest a) what is t
What is the strength of the magnetic field required to exactly balance the weight of the proton and keep it moving horizontally?
A car going north on Guadalupe approaches a red light at 24th street. The driver applies the brakes. At that point, what is true? Take the north- ward direction to be the positive x direction.
The spring scale in the diagram below reads 10.5 N. If the cart moves toward the right with an acceleration also towards the right of 3.25 m/s2, what is the mass of the cart?
An unstretched spring with spring constant 21 N/cm is suspended from the ceiling. A 3.3 kg mass is attached to the spring and let fall. To the nearest tenth of a centimeter, how far does it stretch
To maintain a southward direction, however, the plane must be pointed 15 west of south. If the flight takes 80, what is the wind velocity?
The press box at a baseball park is 30.0 ft above the ground. A reporter in the press box looks at an angle of 18.0 degrees below the horizontal to see second base. What is the horizontal distance
Using the speed determined in item (a), find the maximum heigth reached by the ball.
What minimum speed at the top will a car have to possess in order to successfully negotiate the loop? The gravitational acceleration on the Moon is 1.6 m/s2. (b) What speed at the top of the loop wo
what is the magnitude of the magnitude force on; a. 130cm side, b. 50cm sides, c. 120cm side. d. what is the magnitude of the net force on the loop. show your solution.
Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 22.0 and that of the boat is 45.0.
What is the minimumforce the farmer must exert on the lever in order to lift the rock? The acceleration of gravity is 9.8 m/s2 . Answer in units of N
The hinges are placed at the very top and very bottom of the door. Find F, the magnitude of the horizontal force exerted by the lower hinge.
A wheel (M = 6.51 kg, R = radius 0.524 m) in the shape of a disk is rotating at fo = 81.6 rpm when a tool is Find: τ, the magnitude of the torque exerted by the tool on the wheel.
Jeff of the Jungle swings on a 7.00-m vine that initially makes an angle of 30.0° with the vertical. If Jeff starts at rest and has a mass of 79.0 kg, what is the tension in the vine at the low
Because of your physics background, you have been hired as a member of the team the state highway department has assigned to review the safety of Minnesota freeways. This week you are studying 35W w
Using a light rope, a winch pulls a 50kg sack of potatoes up a snowy slope (inclination angle 10°). The tension T in the rope is 180N. Find the change in gravitational potential energy for the s
If the spring constant is 85 N/m, what is the magnitude of the spring force acting on the toy at the moment it is released?
The golf club was in contact with the ball for 3.0×10-3 . Find the impulse imparted to the golf ball. Find the average force exerted on the ball by the golf club.
A street lamp weighs 145 N. It is supported equally by two wires that form an angle of 120° with each other. What is the tension of each of these wires? If the angle between the wires is reduce
A light bulb is wired in series with a 133-Ω resistor, and they are connected across a 120-V source. The power delivered to the light bulb is 24.3 W. What are the two possible resistances of t
What will be the equilibrium temperature when a 276 g block of copper at 316°C is placed in a 130 g aluminum calorimeter cup containing 817 g of water at 11.7°C?
What is the magnitude of the tension in the string at the top of the new path (directly above the peg)?
While the bucket is falling, what is the force exerted on the cylinder by the axle?
A 16 kg loudspeaker is suspended 2.5 m below the ceiling by two cables that are each 60 degrees from vertical. What is the tension on the cables?