How do you calculate velocity?

How can heat be transferred? A. convection, ultraviolet rays and conduction B. convection, gamma rays and conduction C. convection, visible light and conduction D. convection, radiation, and conduction

Laura sees a horse pulling a buggy. She wonders how it can accelerate if the action of the horse pulling the cart would causes an equal and opposite reaction of the cart pulling on the horse. Which explanation best answers her question? A.

A person travels by car from one city to an - other. she drives for 26.7 min at 81.7 km/h, 12.1 min at 88.3 km/h, 50.8 min at 47.2 km/h, and spends 11.8 min along the way eating lunch and buying gas. determine the average speed of the trip.

How does the law of conservation of mass apply to this reaction: Mg + HCl → H2 + MgCl2? The equation needs to be balanced. There are fewer hydrogen atoms in the equation than magnesium or chlorine. Only the hydrogen needs to be balanced.

It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 6.7 g bullets at the rate of 78 bullets/min, and the speed of each bullet is 530 m/s.

A 30-g bullet is fired with a horizontal velocity of 450 m/s and becomes embedded in block B, which has a mass of 3 kg. After the impact, block B slides on 30-kg carrier C until it impacts the end of the carrier.

11) Shifting with ease from one type of problem-solving strategy to another is called a) flexibility b) versatility c) originality d) openmindedness

A truck undergoes a constant acceleration of 2.0 meters/second2 on a highway that slopes upward at an angle of 30.0° to the horizontal. What is the magnitude of the horizontal component of the acceleration?

Why is there so much more carbon dioxide in the atmosphere of Venus than in that of Earth? Why so much more carbon dioxide than on Mars?

People have proposed driving motors with the earth's magnetic field. This is possible in principle, but the small field means that unrealistically large currents are needed to produce noticeable torques.