You walk into an elevator, step onto a scale, and push the "up" button. you recall that your normal weight is 639 n. when the elevator has an upward acceleration of magnitude 2.90 m/s2, what does the scale read?

What provides the centripetal force needed to keep Earth in orbit? A. inertia B. its rotation on its axis C. the gravitational pull of the Sun D. the gravitational pull of the Moon

A person with which of the following BMI values has the highest increased risk for premature mortality? a. 29 kg/m2 b. 35 kg/m2 c. 25 kg/m2 d. 18.5 kg/m2

In an ore-mixing operation, a bucket full of ore is suspended from a traveling crane which moves along a stationary bridge. the bucket is to swing no more than 20 ft horizontally when the crane is brought to a sudden stop.

What is the energy transformation in a waterfall?

A hockey player hits the puck toward the net. Just after leaving his stick, the puck is traveling at 53 m/s. No other force acts on the hockey puck until it hits the net. Just before hitting the net, how fast is the hockey puck traveling?

How did changing from a light drizzle to a downpour affect the river and the sediment The river increased its slope. The volume of the river decreased. The velocity of the river increased! There was more erosion in the stream.

Which of the fundamental forces explains the structure of atoms and molecules?

It always takes to change the motion of an object. O A. electricity OB. energy C. gravity D. density Reset

What might a psychodynamic theorist think about a person with extreme shyness?

Determine the magnitude of the acceleration for the speeding up phase.