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Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 2.10×10^6 N , one at an angle 15.0 degree west of north, and the other at an angle 15.0degree east of north, as they pull the tanker a distance 0.780 km toward the north. A) What is the total work done by the two tugboats on the supertanker?
A rocket, which is in deep space and initially at rest relative to an inertial reference frame, has a mass of 84.1 x 105 kg, of which 6.63 x 105 kg is fuel. What is the rocket's thrust
A small block with a mass m1 = 4 kg is located at the edge of a disk with a mass of m2 = 20 kg and radius of R = 0.25 m, what is the rotational kinetic energy (in J) of the system
With a quick flick of her wrist, an Ultimate Frisbee player can give a Frisbee an angular velocity of 5.00 revolutions per second. Through what angle, in radians, does the player rotate the Frisbee
A 7.05-kg ball of clay is thrown downward from a height of 4.08m/s onto a spring with k=1600 N/m. Find the total work done on the clay during the spring's compression
Object A, which has a mass m and a velocity v0, collides head-on with object B, which has a mass 2m and a velocity 1/2v0. Following the collision, object B has a velocity of 1/4v0. (a) Determine the velocity of object A after the collision. v = ? If ..
Calculate the number of electrons in a steel (iron) pinhead. The pinhead may be assumed to be spherical with diameter 2 mm
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. What is the speed of the truck when they are abreast
A tendon is 5.2 cm long, has a cross-sectional area of 0.00006 m2 and has an average elastic modulus of 1.2 GPa. It is stretched with a force of 2400 N, What is the tendon stress
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
You have a 1.5 m long copper wire. You want to make an N-turn current loop that generates a 2.4 mT magnetic field at the center, What will be the diameter of your coil
The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of ? = 73.0° above the horizontal. If the radius of the tub is r = 0.455 m, what rate of revolution..
A rocket of total mass 3180-kg is travelling in outer space with a velocity of 115 m/s toward the Sun.
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