How much physical activity should an adult have each week?

A. 60 minutes per day, 7 days a week

B. 30 Ininutes per day, 7 days a week

60 minutes per day, 5 days a week

D. 30 minutes per day, 5 days a week

Why does gum stick to a wall when you through it but when its wet it doesnt stick?

The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle. On wheel and axle A, the wheel and axle are very close in size.

A 8.0 µF capacitor is initially connected to a 2.0 V battery. Once the capacitor is fully charged the battery is removed and a 6.0 Ω resistor is connected between the two terminals of the capacitor. Find the current flowing through the resistor 13.

A home heating system connected to a temperature-sensitive thermostat is a nonbiological example of a negative feedback system. Which of the following best describes the heating element of the furnace? a. effector b. receptor c. control center d.

State the formula for calculating power

Is the planet Jupiter magnetic. Yes or no

The number of spiders in the house and the outside air temperature have an indirect relationship. What will happen to the number of spiders in the house as the outside air temperature decreases?

A 1200 kg car is moving at 5.0 m/s east. it strikes an 1800 kg car at rest. the cars have an elastic collision and move in the east or west direction. the velocity of the 1200 kg car after the collision is:

Describe the movement of particles when water vapor touching cold surface

In 1923, the United States Army (there was no United States Air Force at that time) set a record for in-flight refueling of airplanes. Using two refueling planes, an Airco DH-4B biplane was able to remain in flight for 37 h.