How long does it take for a gas water heater to heat up?

Anita is running to the right at 5 m/s, as shown in (Figure 1). Balls 1 and 2 are thrown toward her by friends standing on the ground. According to Anita, both balls are approaching her at 16 m/s.

The average radius of Mars is 3,397 km. If Mars completes one rotation in 24.6 hours, what is the tangential speed of objects on the planet's surface? Round your answer to the nearest whole number.

What force is required to give an object with mass 2000 kg an acceleration of 3.5 m/s2

Rob wants to work out how much energy his blue spotlights use. He turns the lights on at 9:00 am and leaves them on until 10:30 am, taking an electricity meter reading before and after. The spotlights have a total power of 0.1 kw.

How do you find the net force acting on an object? a) find the largest force on the object b) add all the force vectors c) find the reaction force d) assume there is no friction

Why is the use of scientific names important in biology?

1) what is a calorie?

January 1st 37°F January 7th 48°F January 14th 52°F January 18th 51°F January 21st 45°F January 25th 41°F January 31st 55°F When looking at a data set of numbers, the mean is the average. Look at the table above.

The vector quantity that defines the distance and direction between two positions.

Which statement is true? Select one of the options below as your answer: A. Quarks always occur in groups with leptons. B. Quarks always occur independently. C. Quarks always occur in groups with other quarks. D.