Sarah roller skates 18.5km in 3 1/2 hours. what is her average speed in kilo per hour?

Which best describes the present-day universe? 1. opaque, expanding very slowly, stars produce heavy elements 2. transparent, expanding at an accelerated rate, stars produce heavy elements 3.

A 100 N box is placed on an inclined plane that makes a 30° angle with the horizontal. Calculate the component of gravitational force that acts down the inclined plane. A. 25 N B. 50 N C. 87 N D. 100 N

What type of wave borders the violet end

Determine the kinetic energy of a 7.5 kg roller coaster car that is moving with a speed of 42.8 m/s.

Which statement is a fact regarding the Treaty of Versailles? It was too harsh in the way it treated Germany. It was too lenient in the way it treated Germany. It established peace between the Allies and Germany.

By applying a force of 50N, a pulley system can lift a box with a mass of 20 kg. What is the mechanical advantage of the pulley system?

Three capacitors C1 = 10.1 µF, C2 = 23.0 µF, and C3 = 29.4 µF are connected in series. To avoid breakdown of the capacitors, the maximum potential difference to which any of them can be individually charged is 125 V.

What is the net force in the x-direction? 30 N 34 N 55 N 65 N

If an object does not have domains, will it be possible to make it magnetic?

If the loop is then converted into a rectangular loop measuring 2.1cm on its shortest side in 6.50ms, and the average emf induced across the loop is 14.7V during this time period, what is A. the strength of the B-field