English

1 H.P. = ......... - Physics

Advertisements
Advertisements

Question

1 H.P. = .........

Fill in the Blanks
Advertisements

Solution

1 H.P. = 746 W

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Energy - Objective questions [Page 76]

APPEARS IN

Selina Concise Physics [English] Class 8 ICSE
Chapter 4 Energy
Objective questions | Q 2.1 | Page 76

RELATED QUESTIONS

The blades of a windmill sweep out a circle of area A.

  1. If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time t?
  2. What is the kinetic energy of the air?
  3. Assume that the windmill converts 25% of the wind’s energy into electrical energy, and that A = 30 m2, v = 36 km/h and the density of air is 1.2 kg m–3. What is the electrical power produced?

It takes 20 s for a girl A to climb up the stairs while girl B takes 15 s for the same job. Compare the work done .


Name the physical quantity which is measured in calorie. How is it related to the S.I. unit of the quality?


Arrive at an expression for power and velocity. Give some examples for the same.


A bullet of mass 20 g strikes a pendulum of mass 5 kg. The centre of mass of the pendulum rises a vertical distance of 10 cm. If the bullet gets embedded into the pendulum, calculate its initial speed.


A man is throwing bricks of mass 2 kg onto a floor from a height of 2 m. Bricks reach the floor at a speed `2sqrt(10)` m/s. Man throws 10 bricks in a minute. If the power of man is W watt then `3/10` W is equal to ______ W.


Sand is being dropped from a stationary dropper at a rate of 0.5 kgs-1 on a conveyor belt moving with a velocity of 5 ms-1. The power needed to keep belt moving with the same velocity will be ______.


Calculate the power spent by a crane while lifting a load of mass 2000 kg, at velocity of 1.5 ms-1. (g = 10 ms-2)


Name the quantity which is measured in Wh.


Name the quantity which is measured in eV.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×