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Assume that the air pressure is 0.85 atm and calculate your answer in Newtons per meter squared (N/m^2), otherwise known as pascals (pa).
A dolphin leaps out of the water at an angle of 35 degrees above the horizontal. The horizontal component of teh dolphin's velocity is 7.7 m/s. Find the magnitude of the verticle component of the v
An automobile enters a 100.0 deg curve with a speed of 30.0 m/s and emerges from this curve 14.00 s later with the same speed. What is the magnitude of the acceleration during this time interval (i
what are the (a) magnitude and (b) direction of the displacement, the (c) magnitude and (d) direction of the average velocity, and the (e) magnitude and (f) direction of the average acceleration?
The distances shown in the drawing are rSM = 1.50 × 1011 m and rEM = 3.85 × 108 m. Determine the magnitude of the net gravitational force on the moon.
On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would behave in this way.) What is the total distance (in km) the bird travels?
Ships A and B leave port together. For the next two hours, ship Atravels at 20 mph in a direction 30 degrees. What is the distance between the two ships two hours after they depart?
An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds.
What is the initial velocity of the projectile parallel to the ground (in the x-direction) and perpendicular to the ground (in the y-direction)?
An unstable nucleus of mass 3.4 10-26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles. One particle, having a mass of m1 = 1.0 10-26 kg, moves in the
What is the angular momentum of a figure skater spinning at 2.7rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 16cm , and a mass of 47
A solid cylindrical disk has a radius of 0.13 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. When a 50-N force is applied tangentially to the disk,
Find the velocity of each ball when the two collide. Let upward be considered the positive direction for this problem.
1. Explain how the temperature difference between the poles and the equator drives the motion of the oceans and atmosphere. 2. What are the differences between ice caps and glaciers?
A rifle bullet with a muzzle speed of 310 m/s is fired directly into a special, dense material that stops the bullet in 26 cm. Assuming the bullet's deceleration to be constant, what is its magnitu
Then brakes to come to a stop 40 {rm s} after leaving the stop sign. Compute the average acceleration during the time interval t = 0 to t = 10{rm{ s}}.
1. What is a particle accelerator? How do scientists use particle accelerators to study subatomic particles? 2. What particle is exchanged to generate each of the four fundamental forces?
A moth at about eye level is 12 cm in front of a plane mirror; you are behind the moth, 28 cm from the mirror. For what distance must you focus your eyes to see the image of the moth in the mirror;
On reaching the other train it flies directly back to the first train, and so forth. (We have no idea why a bird would behave in this way.) What is the total distance the bird travels before the tra
You purchase a rectangular piece of metal that has dimensions 5.00 mm x 15.0 mm x 30.0 mm and mass 1.90×10-2 kg. The seller tells you that the metal is gold. To check this, you compute the ave
A science student riding on a flatcar of a train moving at a constant speed of 9.4 m/s throws a ball toward the caboose along a path that the student judges as making an initial angle of 61° to
3 kg baseball travelling at 45 m/s approaches a waiting batter. when the ball is hit, its back, sailing away at 70 m/s. determine the magnitudes of its initial and final momenta?
Do you think nuclear power is a productive idea, or a danger to the environment? Try to find as much information as possible to support the opposing viewpoint (i.e., if you think nuclear power is d
New plastics are being created from corn and soybeans and these plastics break down when exposed to air and water. In what ways will the environment benefit from these biodegradable plastics? Should