Questions in Physics


while driving if you need to use your cell phone

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While driving, if you need to use your cell phone, _________. using a hands-free phone will keep your mind on driving you should pull over to use the phone it …
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explain two ways in which water's properties help sustain life

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Explain two ways in which water’s properties help sustain life. Earth Science
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which particle is used as a beam to treat cancer

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Which particle is used as a beam to treat cancer?
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a metal conductor of length 1m rotates vertically

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A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radi per second. If the horizontal component of earth's magnetic field is 0.2 …
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why do we use antacids write its nature

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Why do we use antacids? Write its nature
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show that the path of projectile is parabola

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Show that the path of a projectile is a parabola.
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in which case does the potential energy decrease

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In which case does the potential energy decrease?
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d 2y dx 2 dy dx y 0

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Solve the following ordinary differential equation d 2y/dx2+dy/dx+y=0​
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prove the law of conservation of linear momentum

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State and prove law of conservation of linear momentum.
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a car of mass m starts from rest

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A car of mass m starts from rest and accelerates so that the instantaneous power
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a ball moving with velocity of 9m s

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A ball moving with velocity of 9m/s collides with another similar stationary ball. After the collision both the balls move in directions making an angle of 30 degree with the …
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a car starts from rest and accelerates uniformly

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A car starts from rest and accelerates uniformly for 10 seconds to a velocity of 8m/s .it runs at a constant velocity and is finally brought to rest in 64m …
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a man throws balls with the same speed

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a man throws ball with the same speed vertically upward one after the other at an interval of 2 seconds.what should be the speed of the throws so that more …
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a wire of length 1m and radius 1mm

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A wire of length 1 m and radius 1mm is subjected to a load. The extension is x.The wire is melted and then drawn into a wire of square cross …
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why should a helicopter necessarily have two propellers

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Why there are two propellers in a helicopter?
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a body is dropped from a certain height

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A body is dropped from certain height and another body is dropped from same height after 2 secs. What will be the separation between two bodies 4 secs after the …
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why it is difficult to walk on ice

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Why is it difficult to walk on solid ice ?
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a man measures time period of a pendulum

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A man measures time period of a pendulum (T) in stationary lift. If the lift moves upward with acceleration g/4, then new time period will be...... (options are given below …
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why are we able to sip hot tea

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Why are we able to sip hot tea or milk faster from a saucer rather than from a cup????
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a spherical mirror produces an image of magnification

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A spherical mirror produces an image of magnification -1 on a screen placed at a distance of 50 cm from the mirror. A) write the type of mirror B) find …
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