Go on. Explore!

lvl 0 • 0 xp

lvl 1

Home Market Decks Interests

Physics

memorize.ai (lvl 286)

(0)

50 cards

()

Section 1

Preview this deck

when kinetic energy goes up, pressure potential energy goes..

Front

1 / 50

Physics

0.0

0 reviews

5			0
4			0
3			0
2			0
1			0

Active users

All-time users

Favorites

Last updated

7 years ago

Date created

Mar 1, 2020

Cards (50)

Section 1

(50 cards)

when kinetic energy goes up, pressure potential energy goes..

Front

down

Back

You go through a loop in a roller coaster at constant speed. Where is your apparent weight a minimum?

Front

at the top

Back

momentum

Front

mass x velocity

Back

when you fill a ballon with hot air

Front

there are less particles so it floats

Back

You are flying on an airplane and you notice that a ball of aluminum foil from lunch starts to roll to the left. From the motion of the foil ball you can conclude that the plane is

Front

turning toward the right.

Back

rotational mass

Front

when masses are closer to the center they have a lesser rotational mass

Back

You're riding on a pogo stick-a vertical stick with a spring at the bottom and foot pads on which you stand. You're holding the top of the stick tightly in your hands and you and the stick are bouncing up and down on its spring. As you land after one particularly high bounce, the spring becomes more and more tightly compressed. When the spring is at half its maximum compression, your velocity is

Front

downward but your acceleration is upward

Back

When you're roller skating on level pavement, you can maintain your speed for a long time. But as soon as you start up a gradual hill, you begin to slow down. What slows you?

Front

As you rise your gravitational potential energy increases so your kinetic energy decreases.

Back

Sliding friction is not desirable in wheel bearings because

Front

work will be converted into thermal energy, and be dissipated.

Back

A common pair of pliers has a place for cutting wires, bolts, or nails. Why is it so important that this cutter be located very near the pliers' pivot?

Front

smaller lever arm creates a larger force

Back

angular acceleration equation

Front

change in angular velocity/ time

Back

Is inertia a force

Front

No

Back

Skiers often stop by turning their skies sideways and skidding them across the snow. How does this trick remove energy from a skier, and what happens to that energy?

Front

The friction of skidding converts the skier's energy into thermal energy.

Back

which way is acceleration in a circle

Front

pointing towards the center

Back

mass density of water

Front

1,000 kg/m^3

Back

angular speed

Front

same in all places on a spinning disk because they need the same amount of time to make one turn

Back

Why can't you open a door by pushing its doorknob directly toward or away from its hinges?

Front

Why can't you open a door by pushing its doorknob directly toward or away from its hinges?

Back

work

Front

force x distance

Back

what two forces are equal

Front

momentum= impulse

Back

acceleration

Front

change in speed/ time

Back

A ball falls from rest for 5 seconds. Neglecting air resistance, during which of the 5 seconds does the ball's speed increase most?

Front

the speed is the same during all five seconds

Back

direction and velocity speed and velocity

Front

if direction changes velocity is not constant: if speed changes velocity changes

Back

You board an elevator with a large briefcase in your hand. Why does that briefcase suddenly feel particularly heavy when the elevator begins to move upward?

Front

The briefcase is accelerating upward, so the resulting apparent weight is downward.

Back

when you fill a ballon with cold air

Front

it will not float

Back

support force

Front

an exact opposite of weight, cancel each other out

Back

impulse

Front

force x time

Back

work also =

Front

weight x height

Back

A horse does work on a cart it's pulling along a straight, level road at a constant speed. The horse is transferring energy to the cart, so why doesn't the cart go faster and faster? Where is the energy going?

Front

The energy is converted to thermal energy as the wheels, axles, and ground get warmer.

Back

if no work is done (momentum and energy)

Front

momentum is translated, no energy is transfered

Back

when you multiply pressure by v it will

Front

equally v^2x

Back

Distance due to gravity

Front

.5at^2

Back

You are riding a very fast Ferris Wheel so that you actually notice a variation in your apparent weight. Where is your apparent weight maximum?

Front

at the bottom

Back

Suppose you are driving your car down the highway at constant velocity. Which of the following are true?

Front

Both the car's kinetic energy and momentum are constant.

Back

as speed goes up pressure goes

Front

down

Back

When rounding a curve at a constant speed, energy and momentum are

Front

energy is constant, momentum is not

Back

spring constant

Front

restoring force/distortion

Back

how do you convert celcius to kelvins

Front

c+ 273

Back

Professional sprinters wear spikes on their shoes to prevent them from sliding on the track at the start of a race. Why is energy wasted whenever a sprinter's foot slides backward along the track?

Front

Energy from the sliding foot serves to make the track and the sprinter's shoe get warmer, not help the runner.

Back

as height goes down pressure goes

Front

up

Back

Consider an elastic ball that is falling downward toward the ground. The ball hits the ground and then begins traveling upward again. At what point in the trip does the ball have the most energy stored in it as elastic potential energy?

Front

after it has rebounded and left the ground

Back

when you fill a ballon with hellium

Front

the particles are smaller and it will float

Back

static friction

Front

contact points touch but don't collide: rollers

Back

whenever something appears at an opening the pressure is

Front

100,000

Back

when the streamline goes into a smaller area the flow becomes

Front

faster

Back

Suppose you are a football player and you kick a ball for a field goal. Ignoring air resistance, the ball's horizontal velocity

Front

remains constant throughout the path

Back

Like a baseball bat, a tennis racket has a sweet spot at its center of percussion. If a tennis ball hits this center of percussion, the racket's handle does not accelerate. This is because

Front

the racket's center of mass accelerates backward while its handle rotates forward about its center of mass and the two motions cancel one another at the handle.

Back

Astronauts learn to tolerate weightlessness by riding in an airplane (nicknamed the "vomit comet") that follows an unusual trajectory. How does the pilot direct the plane in order to make its occupants feel weightless?

Front

In a curve that follows the path of a thrown object with only gravity exerting a force on it.

Back

Where does apparent weight come from?

Front

things like the ground pushing on your body

Back

power

Front

work/time

Back

as temperature increases

Front

pressure increases

Back