What is a direct fossil

A teacup on a spinning teacup ride takes 1.5 s to complete a revolution around the center of the platform. What is the centripetal acceleration of the teacup if it is 3.0 m from the center of the ride?

A paper weight is dropped from the roof of a block of multi storey flats. each storey being 3 metre high. it passes the ceiling of the 20th storey at 30m/s. if g=10m/s2, how many storeys does the flat have?

a bus is moving with a constant velocity 10m/s along horizontal rode. a man standing inside bus throws ball virtically upward with valocity 8 m/sec WRT tohimself and cathes the ball. the magnitude of displacment of ball WTR ground will be

A mechanical high-speed bat is flying along a path perpendicular to a wall. it emits a sound with a frequency f0. the night is clear and the air is still. let the speed of sound waves in the still air be vs.

What are the Vedas? a) priests b) religious writings c) writings of the Buddha d) Hindu gods

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.

A force of 5 N accelerates an object. The object's mass is 50 g. What is the acceleration of the object? (Formula: F=ma)

Which is a legacy of the enlightenment?