Which is more reliable-using a manual stop watch or using light gates?

Explain.

A body is projected from the ground at an angle of 30° with the horizontal at an initial speed of 128 ft/s. Ignoring air friction, determine: a) in how many seconds it will strike the ground. b) how high it will go. c) what its range will be.

Which object extends farther from the nucleus of the Milky Way galaxy? The spiral arms The halo The bulge The disk

he pressure inside a bottle of Champagne is 4.5 atm higher than the air pressure outside. The neck of the bottle has an inner radius of 1.0 cm. What is the frictional force on the cork due to the neck of the bottle?

a car wheel turning at 0.5 rad/s is brought to rest by the brakes in exactly two revolutions. what is the angular acceleration of the wheel?

If the voltage of the secondary side of the transformer is less than? and the voltage of the primary side of the transformer exceeds? to ground, the secondary side shall be grounded.?

What is the formula for velocity?

The 3.00 kg cube in fig. 15-47 has edge lengths d 6.00 cm and is mounted on an axle through its center. a spring (k 1200 n/m con - nects the cube's upper corner to a rigid wall. initially the spring is at its rest length.

A freight train traveling with a velocity of - 4. o m/s begins backing into a train yard. if the train's average acceleration is - 0.27 m/s^2 what is the trains velocity after 17s

How can we describe an atom

What is the volume of a gold nugget that weight 2.20kg. the density of gold is 19g/cm^3 ... ?