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Two boxes are being lifted up onto a roof by a cable providing the force F. If F=1500 N, determine the acceleration of the boxes and the tension in the rope connecting them. Use m1=80 kg, m2=50 kg,
Sketch a graph of the total momentum in the system of the two asteroids after the collision. Asteroid A is 500 kg going 20m/s and Asteroid B is 250 kg going 10 m/s. it's an inelastic collision.
hree charges, q1=+15.2nC q2=+15.2nC and q3=+30.4nC are fixed at the corners of an equilateral triangle with a side length of 6.75cm. Find the magnitude of the electric force on q3.
This field changes at a constant rate from 28 mT to 49 mT in 68 ms. What is the magnitude of the induced emf in the coil at the instant the magnetic field has a magnitude of 44 mT?
Explain the reasoning of the steps that allow you to determine: (a) the electric potential of each sphere; (b) the electric field near the surface of each sphere; and (c) the surface charge density
It rises, in maintaining a constant 300 temperature, to an altitude where its volume has expanded five times. How much work is done by the gas during this isothermal expansion?
A rectangular loop has 85 turns with an area of 0.225 m2 and lies in a uniform magnetic field of 0.28 T. Several Physics lab students have reported that the maximum torque exerted on this loop is 1
Sam, whose mass is 69.0kg , takes off down a 47.0m high, 8.00 degree slope on his jet-powered skis. The skis have a thrust of 190N. Sam's speed at the bottom is 36.0m/s. What is coefficient of kine
Determine the normal force for a laundry basket with a mass of 3.4 kg in each of the following situations
The ball rises then falls until it strikes the ground. The initial velocity of the ball is 28.4 m/s. at time t= 4.3 , what is the acceleration of the ball, neglect air resistance.
An astronaut on the Mars attaches a small brass ball to a 1.00- length of string and makes a simple pendulum. She times 12 complete swings in a time of 38.4 seconds. From this measurement she calcu
Some sliding rocks approach the base of a hill with a speed of 16.0 m/s. The hill rises at 44.0 degrees above the horizontal and has coefficients of kinetic and static friction of 0.420 and 0.580,
A potter's wheel is rotating at 3.2 rad/s in a counterclockwise direction. This takes 26 seconds. What is the average angular acceleration of the wheel during this time?
A point charge q1=4.00 nC is located on the x-axis=2.00m.A second point charge,q2=-6.00 nC is on the y-axis at y=1.00m. What is the total flux due to these two point charges through a spherical sur
George is swinging on a playground swing. The length of the swing is l, and George's weight is W. At the bottom of the swing, George's speed is v=n1 meters/sec. The value of l times g is equal to l
A 220 g block on a 60cm -long string swings in a circle on a horizontal, frictionless table at 55 rpm. What is the speed of the block?
A five-slit system with 9.0 slit spacing is illuminated with 615 light. Find the angular positions of the first two maxima.Find the angular positions of the third and sixth minima.
A body of weight 150N is supported bya thin cord attached to a point in the ceiling. Another cord is attached to the weight and pulled horizontally until the supporting cord makes an angle of 30 de
Estimate the radius of curvature for a curve marked 35km/h . The coefficient of static friction of rubber on wet concrete is 0.7, the coefficient of kinetic friction of rubber on wet concrete is 0.
A helium-neon laser emits light of wavelength 633 nanometers (nm). Light from an argon laser has a wavelength of 515 nm. Which laser emits the higher-frequency light?
A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.00 rev/s in 3.00 s. What is the radial and tangential components of the acceleration of a point on the outer rim o
Two bicycle tires are set rolling with the same initial speed of 3.70 along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflate
A rock is tossed straight up with a velocity of 38.0 m/s. When it returns, it falls into a hole 18.5 m deep. What is the rock's velocity as it hits the bottom of the hole?
A 8.70 kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.440. Determine the kinetic frictional force that acts on t
When angle=20.0 degrees, the speed of the object is 8.00 m/s. At this instant . find (a) the tension in the string. (b) the tangential and radial components of acceleration.