A1.2-kg mass is projected from ground level with a velocity of 30 m/s at some unknown angle above the horizontal. a short time after being projected, the mass barely clears a 16-m tall fence. disregard air resistance and assume the ground is level. what is the kinetic energy of the mass as it clears the fence

Which of the following correctly describes the early view of catastrophism?

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?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?