[ad_1]

Get college assignment help at uniessay writers The space shuttle begins its landing at a speed of 357 km/hr at an angle of 13 degrees below the horizontal. What are the horizontal and vertical components of its velocity?

Four particles with masses 2 kg, 6 kg, 2 kg, and 4 kg are connected by rigid rods of neg- ligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 2 rad/sFind the moment of inertia of the system about the x axis. Answer in units of kg · m2.

Question part Points Submissions 1 0/7.69 6/7 Total 0/7.69 A wheel 60.0 cm in diameter accelerates uniformly from 245 rpm to 365 rpm in 6.5 s. How far will a point on the edge of the wheel have traveled in this time?

One end of a horizontal string of linear density 5.6×10−4 kg/m is attached to a small-amplitude mechanical 270-{rm Hz} oscillator. The string passes over a pulley, a distance ell = 1.50;{rm{ m}} away, and weights are hung from this end, the figure .

draw a sketch that shows the distribution of dipoles in a ferromagnetic solid in zero applied magnetic field .what is the name given to internal interaction acting on the dipoles

A place kicker must kick a football from a point 35.0 m (about 38 yd) from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 23.0 m/s at an angle of 56◦ to the horizontal. The acceleration of gravity is 9.81 m/s2 . a) To determine if the ball clears the cross- bar, what is its height with respect to the crossbar when it reaches the plane of the crossbar? Answer in units of m.

A place kicker must kick a football from a point 32.7 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 22.4 m/s at an angle of 53° to the horizontal.

A 80kg student is standing atop a spring in an elevator that is accelerating upward at 3.0. The spring constant is 2700 .

A 535 g ball swings in a vertical circle at the end of a 1.4 m-long string. When the ball is at the bottom of the circle, the tension in the string is 22 N. What is the speed of the ball at that point?

A gymnast is performing a floor routine. In a tumbling run she spins through the air, increasing her angular velocity from 3.00 to 4.60 rev/s while rotating through three-fourths of a revolution. How much time does this maneuver take?

Get college assignment help at uniessay writers Two skaters, both of mass 75 kg, are on skates on a frictionless ice pond. One skater throws a .3 kg ball at 5 m/s to his friend, who catches it and throws it back at 5 m/s. When the first skater has caught the returned ball, what is the velocity of each of the two skaters?

An antitank weapon fires a 3.00 kg rocket which acquires a speed of 50.0 m/s after traveling 90.0 cm down a launching tube. Assuming the rocket was accelerated uniformly, what is the average force acted on it?

A playground merry-go-round of radius 2.00 m has a moment of inertia I = 295 kg·m2 and is rotating about a frictionless vertical axle. As a child of mass 25.0 kg stands at a distance of 1.00 m from the axle, the system (merry-go-round and child) rotates at the rate of 17.0 rev/min. The child then proceeds to walk toward the edge of the merry-go-round. What is the angular speed of the system when the child reaches the edge? 1 rad/s

A solid sphere with a diameter of 16 cm is released from rest; it rolls without slipping down a ramp. dropping through a vertical height h = 0.76 m. The ball leaves the bottom of the ramp, which is a distance y = 1.15 m above the floor, moving horizontally. (A) Through what horizontal distance d does the ball move before landing? (B) How many revolutions does the ball make during its fall? C) Now suppose that the ramp is frictionless, so that the ball slides instead of rolling. Through what horizontal distance d does the ball move before landing in this case?

A 52.5 kg painter is on a uniform 20.0 kg scaffold supported from above by ropes . There is a 6.0 kg pail of paint to one side, as shown. Can the painter walk safely to both ends of the scaffold? Which end(s) is dangerous? How close to the end can he approach safely?

A place kicker must kick a football from a point 31.0 m (about 34 yd) from the goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 25.0 m/s at an angle of 51◦ to the horizontal. The acceleration of gravity is 9.81 m/s2 . a) To determine if the ball clears the cross- bar, what is its height with respect to the crossbar when it reaches the plane of the crossbar? b) To determine if the ball approaches the crossbar while still rising or while falling, what is its vertical velocity at the crossbar? Answer in units of m/s.

4.0-µF and an 11.0-µF capacitor are connected in parallel across a 25-V battery. Find (a) the equivalent capacitance and 1 µF (b) the total charge stored on the two capacitors. 2 C

A long, thin rod (length = 4.5 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a 7.0 µC point charge is fixed to one end of the rod, while a -7.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant external electric field (magnitude = 3.0 103 N/C) that is perpendicular to the rod. With respect to the z axis, find the magnitude of the net torque applied to the rod. 1 N·m

A particle with a charge of 8.4 µC and a speed of 50 m/s enters a uniform magnetic field whose magnitude is 0.34 T. For each of the cases in the drawing, find the magnitude and direction of the magnetic force on the particle. case (a) 1 N See attached Figure. 2 out of the screen upwards downwards into the screen . case (b) 3 N 4 out of the screen upwards into the screen downwards . case (c) 5 N 6 into the screen out of the screen downwards upwards .

A car crashes into a wall at 40 m/s and is brought to rest in 0.1 s. Calculate the average force exerted on a 95 kg test dummy by the seat belt.

A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 1.60 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.

The post The space shuttle begins its landing at a speed of 357 appeared first on uniessay writers.

[ad_2]

Source link

November 3, 2019