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Physics

When a candle burns, which forms of energy does the chemical energy in the candle change to

Determine which factors will increase the reaction rate and which factors will decrease te reaction rate. Decrease concentration Increase Reaction Rate Decrease Reaction Rate Increase temperature Increase surface area Decrease temperature Decrease surface area Add a catalyst

A car accelerated from 0 m/s to 50 m/s in 10 s. What was the average acceleration?

if an ion is negatively charged it has more _ than _

which of these is a covalent bond. a. LiCl b. Alcl3 c. Na2S d. NO2

When you drop an object from a certain height, it takes time T to reach the ground with no air resistance. If you dropped it from three times that height, how long (in terms of T) would it take to reach the ground?

How many milliliters of water would be displaced by 408 grams of lead?

if it takes 150N of force to move a box 10 meters. what is the work done on the box?

A kayaker needs to paddle north across a 85 m wide harbor. The tide is going out, creating a tidal current that flows to the east at 2.0 m/s. The kayaker can paddle with a speed of 3.4 m/s. (a) In which direction should he paddle in order to travel straight across the harbor? (b) How long will it take him to cross?

What two physical processes balance each other to create the condition known as gravitational equilibrium in stars?

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