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Three identical resistors are connected in parallel. The equivalent resistance increases by 670 when one resistor is removed and connected in series with the remaining two, which are still in parall
The potential difference between the wire and the cylinder is 1.00 kV. (a) What is the direction of the electric field inside the tube?
A computer monitor accelerates electrons and directs them to the screen in order to create an image. If the accelerating plates are 1.30 apart, and have a potential difference of 2.15×10^4 V,
A small sphere that carries a charge q is whirled in a circle at the end of an insulating string. The angular frequency of rotation is ω. What average current does this rotating charge represe
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 6900 tonnes to a height of h = 12.0 m (1 tonne = 1000 kg). (a) How much work is done by the cr
If he started at an angle of 20 degrees what is maximum velocity of his motion and where does it occur?
You are traveling in a convertible with the top down. The car is moving at a constant velocity 25.5 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 13.6 m/s. How fa
Relative to the ground determine the angle of the velocity vector of the package just before impact.
At what vertical distance below the edge does the velocity vector of the water point downward at a 71° angle below the horizontal?
A 0.5 kg dart is fired vertically from a spring gun that has spring constant of 4000 N/m Prior to release the spring was compressed by 10.7 cm. When dart is 2 m above the gun its upward speed is 7 m
You carry 7.0 kg bag of groceries 1.2m above ground at constant velocity across a 2.3 m room. How much work do you do on bag in process?
A river of width 31 m flows in a straight line (the x direction) with a speed of 0.21 m/s. A boat is rowed such that it travels directly across the river (along y). If the boat takes exactly 3.0 min
When the ball lands, it is at the same level as the tee. (a) On the distant planet, what is the maximum height of the ball? (b) On the distant planet, what is the range of the ball?
Two small nonconducting spheres have a total charge of 94.8 uC. When placed 1.10 m apart, the force each exerts on the other is 12.2 N and is repulsive. What is the charge on each?
A cylindrical cable with 2.49 x 10-8 m resistivity carries a current of 1500 A. There is a potential difference of 1.8 x 10-3 V between two points on the cable that are 0.33 m apart. What is the radiu
A resister is connected to a 4.50 volt battery and the Current flow is 83 mA. (a.) What is the resistance of the resister? (b.) In what direction does the current flow through the resister?
What is the average force of the kinetic friction acting on the palace? what us tge palace's stopping distance?
A cylindrical tank is 50 ft deep, 39.5 ft in diameter, and filled up to the top with water. A flashlight shines into the tank from above. What minimum angle can its beam make with the water surface
A golf ball rolls off a horizontal cliff with an initial speed of 13.6 m/s. The ball falls a vertical distance of 12.0 m into a lake below. What is the speed v of the ball just before it strikes the
A skateboarder, starting from rest, rolls down a 12.0-m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant.
Determine the magnitude and direction of the theoretical resultant velocity of the athlete just before landing.
While the spring is being compressed, what work is done on the block by the gravitational force on it? What work is done on the block by the spring force while the spring is being compressed?
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 25.2 m/s at an angle of 59.5° above t
An airplane is flying at a speed of 200m/s in level flight at an altitiude of 800 m . A package is to be dropped from the airplane to land on a target on the ground. At what horizontal distance away
Suppose a spacecraft is sent to study an object somewhere in our Milky Way galaxy. This spacecraft finds out that the object has a radius of 2576 km and a mass of 1.3452 x 1023 kg. Assuming the obje