Question
A coin is tossed successively three times. Find the
probability of getting exactly one tail or two tails?Solution
Sample Space : { TTH, THT, HTT, HHT, HTH, THH,HHH, TTT } E = { TTH, THT, HTT, HHT, HTH, THH, } n(E) = 6 P(E) = 6/8 = 3/4
What is the value of 1 horsepower in watts? Â
A train approaches a stationary observer with a speed of 36 km/h. It emits a sound of frequency 500 Hz. If the speed of sound is 340 m/s, what is the ap...
The rate of transfer of charges through a circuit is called?
Two blocks of masses 2 kg and 4 kg are connected by a light spring (k = 300 N/m) and placed on a smooth horizontal surface. The spring is compressed by ...
The work done by a centripetal force on an object moving in a circular path is:
Which of the following pair regarding sound is correct?
I. Loudness – depends on amplitude
II. Shrillness – depends on frequency
A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is –
The kinetic energy of a body is directly proportional to — Â
A plane mirror is placed on a wall. A man walks directly toward the mirror at 2 m/s. The speed at which his image approaches him is:
Fog is an example of –
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