What is the kinetic energy of photoelectron (in terms of keV) ejected from K-shell of a lead (EB-82x keV) By photo electric absorption of a photon of 200 keV?

Q: How is it possible to carry books to school without changing the kinetic or potential energy of the…

A: Given Data: Is it possible to carry books to school without changing the kinetic or potential energy…

Q: 2. A 2.70 kg block starts from rest and slides a distance d down a frictionless 32.1° inclined…

A: Mass of the block m=2.7 kg and angle of incline is 32.1o. The block starts from rest (u=0) and comes…

Q: Mechanical energy of a body includes

A: Mechanical energy of body

Q: Calculate the kinetic energy in Joule, of a car of mass 1500kg travelling at 90km/h.

A:

Q: Estimate the kinetic energy of a 90,000-ton aircraft carrier moving at a speed of at 30 knots. You…

A: It is given that,

Q: 1. A huge box having a mass of 6.80 kg is pulled down along a frictionless surface inclined at 42.0°…

A: Box is being pulled down the incline so the kinetic friction will be up to the inclined surface and…

Q: What is the difference between kinetic and potential energy?

A: Here given the name of two energy . Kinetic and potential energy. We have to define the difference…

Q: Calculate the kinetic energy of a 10 g bullet travelling at a velocity of 2500 km/h.

A: Given data:  Mass (m) = 10 g = 0.010 kg Velocity (v) = 2500 km/h Required: The kinetic energy (KE)

Q: Is work done whenever an object moves through a distance? Explain.

A: SOlution: To explain, if the work done whenever an object moves through a distance

Q: A 2.5 kg crate sliding along the floor has an initial velocity of 2.1 m/s in the +x direction.…

A:

Q: For accurate scientific work, temperatures are often measured by A) mercury thermometers B) alcohol…

A: Answer and Explanation: Mercury and alcohol thermometers were not used for accurate scientific work…

Q: In the ski jump event at the Winter Olympics, skiers jump from a ramp on the top of a 90 m tall…

A: Given, Height of ramp=h=90m mass of skier=m=60 kg speed of launching =v=20m/s

Q: the basics of work and energy.

A: Work is the product of the displacement of the body with the force acting on it in the direction of…

Q: How to solve this problem using the energy method? Like with potential energy and kinetic energy?

A: The expression of the speed from conservation of energy,

Q: A moving car is suddenly stopped. What happens to its kinetic energy?

A: Kinetic energy is,

Q: How much work must be done by frictional forces in slowing a 1,059-kg car from 33.0 m/s to rest?…

A:

Q: A 1,100 kg horse is walking at 2.0 m/s. What type of energy is being described? Your answer: O…

A: Given, Mass of the horse(m)= 1100 kg Speed of the horse walking (v)= 2m/s

Q: Which would have more kinetic energy: a slow moving truck or a fast moving car. Explain your answer

A: We know kinetic energy KE = (0.5) * m * v2. where m is mass of the body  V is the speed of the body

Q: 4. In a water slide whose total length is 5.5 m as shown in Figure 3.12, a 30 kg child slides from…

A: Answer:-  Given  Total length (l) = 5.5 m  Mass of a child (m) = 30 kg  Force(F) = 45.0 N  Height…

Q: . Is it possible to do work on an object that remains at rest?

A: Work

Q: 3. Two blocks of masses ma = 2.90 kg and ms = 6.30 kg are connected by a light string that passes…

A:

Q: Calculate the kinetic energy of a 150 g baseball moving at a speed of 40. m/s

A:

Q: Consider an object of mass m in a circular orbit of radius r and angular velocity w about a larger…

A: As per guidelines, the first three sub-parts have been answered. (a) Potential energy of mass m is,…

Q: radial line extending from the skier to the center of the ball defines an angle a with respect to a…

A: Let m be defined as the mass of the skier, and R be defined as the radius of the spherical ball. Let…

Q: Explain the difference between work and energy.

A: Work is an action did on an object so as to create a displacement. The mathematical expression for…

Q: A car with mass 1500 Kg has a kinetic energy of 675000 J, calculate the speed of the car.

A:

Q: Calculate the kinetic energy of a 750 kg car that moves with a speed of 21 miles/h.

A: Given data The mass of the object is m = 750 kg. The speed of the car is v = 21 miles/hr.…

Q: An object moving 3m/s is shot up into the air. How high up did it go up? Use energy balances to…

A: The energy possessed by an object of mass m in motion and moving  with a velocity v is known as the…