. Daniel's eyes are 1.82 m from the floor when he is wearing his dress shoes, and the top of his head is 1.96 m from the floor. Daniel has a mirror that is 0.98 m in length. How high from the floor should the bottom edge of the mirror be located if Daniel is to see a full-length image of himself? Draw a ray diagram to illustrate your answer,

Q: During a workout, a person repeatedly lifts a 16-lb bar- bell through a distance of 1.1 ft. How many…

A:

Q: 6. You carry your own weight up a 1170 m high mountain. (That's the vertical height, not the…

A: Given Mass of the person is m=95 kg Height of the hill is h=1170 m   We have to find energy expended…

Q: The amount of potential energy possessed by an elevated object is equal to A.) The work done in…

A: Gravitational potential Energy , U =mghm - massg - gravitational fieldh - height ( distance from the…

Q: How much work is done (how much energy is required) to accelerate a 1987.5 kg car entering the…

A: According to  work-energy theorem work done is equals to changes in between Final kinetic energy and…

Q: 10. You move a 2.5-kg book to a shelf that is 2.6 m above the ground. How much GPE is used to…

A: Given :                        m=2.5kg∆h=2.6muse,U=mg∆h

Q: . What is the van moving KE of a 3 500 kg at 65 km/h?

A: Given data:  Mass of the moving van (m) = 3500 kg Velocity (v) = 65 km/h Required: The Kinetic…

Q: 3. A typical tablet battery recharger provides 10 Watts of power. 60% of this power is converted to…

A: Power of recharger (P) = 10 Watt Percentage of power , which get converted to chemical potential…

Q: 8. What are two ways that energy can be conserved?

A: Introduction: Energy is the quantitative property of the body which have the tendency to do work, it…

Q: 8. What is the kinetic energy of a 1200 kg car travelling 90 km/h?

A: Given: The mass of the car is 1200 kg. The speed of the car is 90 km/h.

Q: The mass energy equivalence shows that conservation of mass is a restatement of — A
the first law of…

A: Analyzing the question,  In this question we have to determine that which of the four laws is a…

Q: . You use 40 J of energy to rise a 250 N object. How far high did you lift it

A: Given Potential energy is U=40 J Weight of an object is mg=250 N

Q: 5. An object has a kinetic energy of 14 J and a mass of 17 kg , how fast is the object moving?

A:

Q: the KE of a 1 000 kg . Calculate car travelling at 60 km/h.

A: Given data:  Mass (m) = 1000 kg Velocity (v) = 60 km/h Required: Kinetic Energy (KE)

Q: When you are riding a bicycle going forward, what is the direction of the angular momentum of the…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Airflow lifts a 3.6 kg bird 50 m up. How much work was done by the flow?

A: The energy possessed by an object when raised to a height h from the ground is known as the…

Q: 41. The second floor of a house is 6 m above the street level. How much work is required to lift a…

A: Mass of refrigerator (m) = 300 kg  Height of second floor (h) = 6 m

Q: 6. What is the potential energy stored in a cubic meter of water (1000 kg) that is in a reservoir…

A: Given: The mass of the water inside the reservoir is 1000 kg. The height of the reservoir is 60 m.

Q: 13. A 100 watt light bulb runs for 120 seconds. How much energy does it use?

A: Acording to given question  Bulb has power 100 watt I.e  it has required 100 joule energy per second…

Q: 28. How much work is done lifting a 3-m chain over the side of a building if the chain has mass…

A: Required : Work done in lifting a chain.

Q: . At the first stage of a roller coaster ride, the 1200kg roller coaster ends up 50 m above its…

A: Mass of the roller coaster(m)=1200kg Height(h)=50m

Q: How important is energy to the advancement of society and how do we ensure self-sufficiency for the…

A: Answer :-  Renewable energy is the solution to self-sufficient energy independence for most…

Q: The amount of work a 0.60 kW electric drill can do in 1.0 minute is  0.6 J 36 J 0.6 kJ 36 kJ

A: Power is defined as the rate of work done.              P=dW/dt      dW=P*dt

Q: 7. Determine the total work required to accelerate a vehicle of mass 1500 kg from 10 m/s to 25 m/s.

A: Given, Mass , m = 1500 kg Initial velocity = 10m/s Final velocity = 25m/s Work done = change in…

Q: 10. How much work is done to accelerate a 2,500 kg car from rest to a velocity of 27 m/s?

A:

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.