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How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive angle) must it now sail to reach its original destination?
An infinite plane is uniformly charged with static electricity and generates an electric field. The field has a strength of 7.50 N/C at a distance of 1.00 m from the plane. (a) What is the strength
Compute the acceleration at the moment the train speed reaches 58.0 km/h. Assume the train continues to slow down at this time at the same rate.
Suppose a 67-kg boy and a 42-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the ac
A 2.5 kg block sliding with a constant velocity of 6.0 m/s on a frictionless horizontal surface approaches a stationary 12.5 kg block.
If the radius of Foosbane is equal to the radius of the Earth, and the acceleration due to gravity at the surface is 5.4 m/s2, what is the period of oscillation of the pebble, in minutes?
A loaded tractor trailer with a total mass of 5000 kg traveling at 3.0 km/h hits a loading dock and comes to a stop in 0.64 s. What is the magnitude of the average force exerted on the truck by the
A 15.0 g rubber bullet hits a wall with a speed of 120 m/s. If the bullet bounces straight back with a speed of 92 m/s, what is the change in momentum of the bullet?
A submarine dives 90.0 m at an angle of 8.0° below the horizontal. What are the horizontal and vertical components of the submarine's displacement? (Assume that upward and the direction of the
Find the magnitude of the linear momentum of
A cold canned drink is left in a warmer room where its temperature rises as a result of heat transfer. Is this a reversible process? Explain.
Calculate the initial speed v0 such that a projectile, fired straight up from the surface of the Earth, will reach a distance of 2.7 R from the center of the Earth, where R is the radius of the Ear
A centrifuge is spinning at 5,400 rpm with radius 14 cm. (a) Find the period (b) Find the frequency
Suppose the gravitational field vector of a spherically symmetric mass distribution is a constant, i.e., independent of the distance from the center of the sphere. Determine the mass density ρ(r
The Sun radiates with an average power of 3.85 × 1026 W. Calculate the EM wave intensity incident on the Earth (above the atmosphere).
The screen is 250 cm from the slide. Assume that it is a thin lens. (a) What focal length does the lens need? b) How far should you place the lens from the slide?
Give an example of "the organism environment interaction being two way" with regard to how organisms change planetary chemistry and physics.
If the collision is completely inelastic, find v, the speed of the two boxes after the collision.
Identify the classical probability of finding the electron in this interval and state how it compares with the answer to part (a). (c) Repeat parts (a) and (b) assuming the particle is in the 99th e
The coefficient of kinetic friction between the log and the ramp is 0.890, and the log has an acceleration of 0.800 m/s2. Find the tension in the rope.
A 4.0 kg ball with a velocity of 5 m/s in the +x- direction collides head on elastically with a stationary 2.0 kg ball. What are the velocities of the balls after the collision?
Find ΔE, the energy lost during the collision between the ball and the ground.
A Fed Ex worker pulls a box of mass 20 kg with a force of 120 N at an 11 degree angle with respect to the floor (a) Ignoring friction, what is the acceleration of the box?
She first kicks it to player #2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y?
A 2000 kg plane uniformly accelerates from rest to a launch speed of 300 km/h in 2.0 s. What is the magnitude of the net force on the plane?