1) A stone is projected upwards at an angle of 30° to the horizontal from the top of a tower of height 100m and it hits the ground at a point Q. If the initial velocity of projection is 100ms
calculate the:
i. Maximum height of the stone above the ground;
ii. Time it takes to reach this height,
Time of flight
iv. Horizontal distance from the foot of the tower to the point Q. [Neglect air resistance and
take g as 10ms ?).

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?