What type of simple machine can be used to reduced the resistance force of friction?

The Zika Virus is most dangerous to which group of people? A. A. the elderly B. B. children under the age of 13 C. C. Adults D. D. Pregnant women

If an astronaut takes an object to the moon the following is true (choose only one). A the mass will change but the weight will be the same. B both the mass and the weight of the object will be the same.

The relative angle at the knee changes from 0 to 85 degrees during the knee flexion phase of a squat exercise. If 10 complete squats are performed, what is the total angular distance undergone at the knee (in degrees) ?

What special day is when Massachusetts receives the most indirect rays of the sun? A. June solstice B. December solstice C. March Equinox D. September Equniox (this is science)

Sphere x, of mass 2 kg, is moving to the right at 10m/s. sphere y, of mass 4 kg, is moving to the left at 10m/s. the two spheres collide head-on. the magnitude of the impulse of x on y is:

How work done against gravity can be expressed?

An electron is acted on by two electric forces, one of 2.7*10-14 N acting upward and a second of 5.8*10-14 N acting to the right. What is the magnitude of the electric field at the electron's location?

A satellite on a Low Earth Orbit is flying with a speed of 7.65 km/s. The vertical component of the Earth's magnetic field is 35.3 μT at the current location of the satellite.

A central air conditioner uses 4.5 kilowatts. It runs for 10 hours over the course of a day. How much energy does the air conditioner use during that day?

Hich of the following needs is an addition to Maslow's original hierarchy and only appears in the eight-stage revised model