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Get college assignment help at uniessay writers The anode (positive terminal) of an X-ray tube is at a potential of 95000 V with respect to the cathode (negative terminal). (a) How much work (in joules) is done by the electric force when an electron is accelerated from the cathode to the anode? J (b) If the electron is initially at rest, what kinetic energy does the electron have when it arrives at the anode?

When a particle is a distance r from the origin, its

When a particle is a distance r from the origin, its potential energy function is given by the equation U(r) = kr, where k is a constant and r = x2 y2 z2 . Please provide step-by-step method to solve problem. (a) What are are the SI units of k? (b) Find a mathematical expression in terms of x, y, and z for the y-component of the force on the particle. (c) If U = 3.00 J when the particle is 2.00 m from the origin, find the numerical value of the y-component of the force on this particle when it is at the point (-1.00 m, 2.00 m, 3.00 m).

An engine is being used to raise a 89-kg crate vertically

An engine is being used to raise a 89-kg crate vertically upward. If the power output of the engine is 1620 W, how long does it take the engine to lift the crate a vertical distance of 18.7 m? Friction in the system is negligible.Please provide step-by-step method to solving the problem.

If a fish is attached to a vertical spring and slowly

If a fish is attached to a vertical spring and slowly lowered to its equilibrium position, it is found to stretch the spring by an amount d. If the same fish is attached to the end of the unstretched spring and then allowed to fall from rest, through what maximum distance does it stretch the spring?

In Fig. 6.8, a 5.00-kg block is moving at 5.00 m/s

In Fig. 6.8, a 5.00-kg block is moving at 5.00 m/s along a horizontal frictionless surface toward an ideal spring that is attached to a wall. After the block collides with the spring, the spring is compressed a maximum distance of 0.68 m. What is the speed of the block when the spring is compressed to only one-half of the maximum distance? Please provide step-by-step method to solving the problem. Attached is the figure.

A child sitting 2.00 m from the center of a merry-go-round

A child sitting 2.00 m from the center of a merry-go-round moves with a speed of 1.65 m/s. Calculate the centripetal acceleration of the child (m/s), and the net horizontal force exerted on the child (N). (m = 29.0 kg).

A 0.480-{rm kg} block is attached to a horizontal spring that

A 0.480-{rm kg} block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 21.0 N/m. The block rests on a frictionless surface. A 5.30×10−2-{rm kg} wad of putty is thrown horizontally at the block, hitting it with a speed of 2.20 m/s and sticking.

What is the magnitude of the apparent weight of a 84

What is the magnitude of the apparent weight of a 84 kg astronaut 4500 km from the center of the Earth’s Moon in a space vehicle moving at constant velocity? Express your answer using two significant figures, and state the “direction” in this case.

If a curve with a radius of 85m is properly banked

If a curve with a radius of 85m is properly banked for a car traveling 68 km/h, what must be the coefficient of static friction for a car not to skid when traveling at 93 km/h?

A person is riding a bicycle at a constant speed of

A person is riding a bicycle at a constant speed of 36km/hour. The radius of the wheel is 50cm. a. Determine teh angular speed of the bicycle. b. The brakes are applied and the bicycle is brought to a uniform speed. During braking , the bicycle covers a translational distance of 10m . Determine how many turns that each wheel would make during braking. c. How muck time does it take for the bike to come to rest ? d. What is the angular acceleration ( in rad/s2) of each wheel ?

A vertical electric field of magnitude 2.00 ×10^4N/C exists above the

Get college assignment help at uniessay writers A vertical electric field of magnitude 2.00 ×10^4N/C exists above the Earth’s surface on a day when a thunderstorm is brewing .A car with a rectangular size of 6.00m by 3.00m is traveling along a dry gravel roadway sloping downward at 10.0˚.Determain the electric flux through the bottom of the car ?

Describe the construction of a electromagnetic velocity sensor and explain its

Describe the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse per rotation of wheel at a speed of 80Km/H?

A 67.0-kg man is riding an escalator in a shopping mall.

A 67.0-kg man is riding an escalator in a shopping mall. The escalator moves the man at a constant velocity from ground level to the floor above, a vertical height of 4.00 m. What is the work done on the man by each of the following forces?

A hot air balloon has a mass of 3400kg and two

A hot air balloon has a mass of 3400kg and two 75kg passengers. It is currrently decending at 4m/s. Draw a free body diagram for the hot air balloon. When the burner is turned on what force is required to cause an upward acceleration of 5m/s squared?

a 5 Kg block is on a 9 Kg triangular wedge.

a 5 Kg block is on a 9 Kg triangular wedge. All surfaces are frictionless and both object start from rest. The block starts at the top of the wedge at 1.2 m. Find the final speeds of a block and the wedge once the blook has slid to the bottom.

A 0.35 kg point mass moving on a frictionless horizontal surface

A 0.35 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass moves along the dotted line. When it passes point A, its velocity is 3.5 m/s directed as shown. The distance AP is 0.6 m and BP is 1.0 m. (a) Find the speed of the mass at points B and C. (b)Find b

A laser beam is incident on a 37°-53°-90° prism perpendicular to

A laser beam is incident on a 37°-53°-90° prism perpendicular to one of its faces, as shown in the figure below. The transmitted beam that exits the hypotenuse of the prism makes an angle of 20° with the direction of the incident beam. Find the index of refraction of the prism. (Use the following as necessary: θ1 = 20°, θ2 = 37°)

a single slit 1 mm wide is illuminated by 450 nm

a single slit 1 mm wide is illuminated by 450 nm light. what is the width of the central maximum in the diffraction pattern on a screen 5m away

A 1.80 102 kg crate is being pushed across a horizontal

A 1.80 102 kg crate is being pushed across a horizontal floor by a force vector P that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.350. What should be the magnitude of vector P , so that the net work done by it and the kinetic frictional force is zero?

A woman stands on a scale in a moving elevator. Her

A woman stands on a scale in a moving elevator. Her mass is 52.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9300 N. What does the scale read during the acceleration?

A car is driven east for a distance of 49 km,

A car is driven east for a distance of 49 km, then north for 21 km, and then in a direction 27° east of north for 26 km. Determine (a) the magnitude (in km) of the car’s total displacement from its starting point and (b) the angle (from east) of the car’s total displacement measured from its starting direction.

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