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The system is balanced by a support that is 0.30 m from the left end of the plank. How far to the right of the support is the plank's center of gravity?
A 1.40 x 10^2 kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.4. What should be the m
To hoist himself into a tree, a 72.0-kg man ties one end of a nylon rope around his waist and throws the other end over a branch of the tree. He then pulls downward on the free end of the rope with
A new circus act is called the Texas Tumblers. Lovely Mary Belle swings from a trapeze, projects herself at an angle of 53 , and is supposed to be caught by Joe Bob, whose hands are 6.1 above and 8
Determine the appropriate numerical values of ΔV1 and ΔV2 for 12C. Carry out your intermediate calculations algebraically, so that you can use the algebraic results in the next part.
Bonnie and Clyde are sliding a 295 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 387 of force while Bonnie pulls forward on
A 5.0kg mass is released from rest, at the top of a frictionless 30 degree inclined plane. Calculate the kinetic energy of the mass when it has slide 40 cm down the incline starting from rest.
An 18 g rifle bullet traveling 235 m/s buries itself in a 3.6 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal compo
Two negative and two positive point charges (magnitude = 4.15mC) are placed on opposite corners of a square as shown in the figure ( each side = 0.100 m). Determine the magnitude of the force on ea
Explain the major points of the Sternberg, Spearman, and Gardner models of intelligence. Discuss specific similarities and differences from one model to another.
A step-up transformer has 300 turns on its primary coil and 90000 turns on its secondary coil If the current flowing through the secondary is 5 amps What is the current flowing in the primary?
Find the net downward force on the tank's flat bottom, of area 2.20 m^2, exerted by the water and air inside the tank and the air outside the tank.
A superball with a mass of 62.4 g is dropped from a height of 1.7 m. It rebounds to a height of 1.4 m. What is the change in its linear momentum during the collision with the floor? The acceleratio
A deuteron is accelerated from rest through a 10-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.6 T. What is the radius of the resulting circular path?
The rocket fires for 10 mins , after which the asteroid is moving at 29 degrees to its original path at a speed of 18 km/h/ Find its average acceleration.
A small block with a mass of 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface (the figure ). The block is originally revolving at a distance of 0.50 m from
An airplane is flying in a horizontal circle at a speed of 155 m/s. The 63.8 kg pilot does not want his radial acceleration to exceed 11.1 g. The acceleration of gravity is 9.8 m/s2 . What is the m
An alpha particle with a charge of 2e (e = 1.6 × 10-19 C) and a mass of 4(1.66 × 10-27 kg) is moving at right angles to a uniform magnetic field of 1.20 T. The radius of curvature of th
Two wires, each 28.1 cm long, are connected to two separate 9.00 V batteries as shown in the figure. The resistance of the first wire is 5.00 Ω, and that of the other wire is unknown (R). If
Assume that acid rain has lowered the pH of a particular lake to pH 4.0. What is the hydroxyl ion concentration of this lake?
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 104 kg of water fall each second through a height of 19.6m. I one half of the gravitational potential
The top of a platform with a speed of 4.8 m/s. If the trampoline behaves like a spring of spring constant 6.2×104 N/m, how far does he depress it?
A 141-{rm g} baseball is dropped from a tree 15.0 m above the ground. If it actually hits the ground with a speed of 8.00 m/s, what is the magnitude of the average force of air resistance exerted o
What is the gauge pressure at a point 2.65 m downstream, where the pipe has narrowed to a 1.00 cm radius? The flow rate is 20.0π cm3/s
Express your answer using two significant figures.