Both kinetic energy and potential energy

Calculate the work done during combustion of 0138 kg of ethanol C2H5OHl at 300 K Given R8314JK1mol1 molar mass of ethanol 46gmol1

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

A force of

40 N

acts on a body, and body moves through a distance of

2

metre at an angle of

45 °

in the direction of the force. The work done by the force is

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Consider two circuits:
(i) A: in which N identical bulbs are connected in series across a battery of emf E.
(ii) B: in which N bulbs identical to those in A are connected in parallel across similar battery of emf E.

P_{A}

: Power dissipating in each bulb in A.

P_{B}

: Power dissipating in each bulb in B.

P_{AT}

: Total power delivered by battery in circuit A.

P_{B T}

: Total power delivered by battery in circuit B.

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

An object of mass

15 kg

is moving with uniform velocity of

4 m / s

. What is the kinetic energy possessed by the object?

MEDIUM

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Which formula is not correct for

R

?

(R =

resistance)

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Which of the following terms does not represent electrical power in a circuit ?

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Figure shows three electrical appliances connected to a

220 V

ac mains. What is the amperage (current rating) of the fuse that should be used in the circuit?
Question Image

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

An electric bulb is connected to a

220 V

generator. The current is

500 mA

. What is the power of the bulb?

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

An electric bulb has rating of

30 W, 12 V

. The maximum current that can pass through it will be :

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Which of the following term does not represent electric power

(P)

in electric circuit ?

HARD

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

If the current through a resistor is increased by 50%, the increase in power dissipated will be (assume the temperature remains constant)

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

A household consumes

1 kwh

of energy per day. This energy in joules is:

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

The practical unit of electrical energy

1 kWh

means

HARD

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

A water pump lifts water from a level $10 m$ below the ground. The water is pumped at the rate of $30 kg / \min$ with negligible velocity. Calculate the minimum power the pump should have to do this work.

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

One kilowatt hour

=

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Electrical power is given by

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Flying birds has

MEDIUM

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

A boy of mass

50 kg

runs a stair case of

45

steps in

9 \sec

. If the height of each steps is

15 cm

, find his power. (Take

g = 10 {ms}^{- 2}

).

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

1 kWh =

?

EASY

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

Commercial unit of electrical energy one kilowatt hr.

(1 kWh)

is equivalent to:

HARD

Physical Sciences>Energy>Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.>Definitions of Energy - Motion energy is properly called kinetic energy; it is proportional to the mass of the moving object andgrows with the square of its speed.

A pump on the ground floor of a building can pump up water to fill the tank of

30 m^{3}

in

15

min. If the tank is

40 m

above the ground, and the efficiency of the pump is

30 %,

the power consumed by the pump is

(g = 10 m / s^{2})

Calculate the work done during combustion of 0.138 kg of ethanol, $C_{2} H_{5} O H_{(l)}$ at 300 K. (Given: $R = 8.314 J K^{- 1} m o l^{- 1}$ , molar mass of ethanol $= 46 g m o l^{- 1}$ .)

Important Questions on Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.

Learn and Prepare for any exam you want !

Calculate the work done during combustion of 0.138 kg of ethanol, C2H5OH(l) at 300 K. (Given: R=8.314JK-1mol-1 , molar mass of ethanol =46gmol-1 .)

Important Questions on Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.

Learn and Prepare for any exam you want !

Calculate the work done during combustion of 0.138 kg of ethanol, $C_{2} H_{5} O H_{(l)}$ at 300 K. (Given: $R = 8.314 J K^{- 1} m o l^{- 1}$ , molar mass of ethanol $= 46 g m o l^{- 1}$ .)