High School Level Science

Shake an object to and fro if you want to judge its

Shake an object to and fro if you want to judge its

Shake an object to and fro if you want to judge its
A) mass.
B) weight.
C) both the same
D) none of the above

les123456   13   3 Replies

hoofygoofy

What is the meaning of the expression F = 0?

What is the meaning of the expression F = 0?

What is the meaning of the expression F = 0?

samilee   14   3 Replies

Yonigca

An object is pulled with three forces: one at 20 N to the right, another at 40 N to the right, and ...

An object is pulled with three forces: one at 20 N to the right, another at 40 N to the right, and ...

An object is pulled with three forces: one at 20 N to the right, another at 40 N to the right, and the third at 30 N to the left. The net force is
A) 60 N to the right.
B) 60 N to the left.
C) 30 N to the left.
D) none of the above

christyjames   17   2 Replies

christyjames

A commercial jet has a mass of 5000 kg. During takeoff the thrust of its engine is 10,000 N, ...

A commercial jet has a mass of 5000 kg. During takeoff the thrust of its engine is 10,000 N, ...

A commercial jet has a mass of 5000 kg. During takeoff the thrust of its engine is 10,000 N, producing an acceleration of
A) 0.5 m/s2.
B) 1 m/s2.
C) 2 m/s2.
D) 4 m/s2.
E) none of the above

skiddd   17   2 Replies

skiddd

To say a circuit is dc is to say that current in the circuit

To say a circuit is dc is to say that current in the circuit

To say a circuit is dc is to say that current in the circuit
A) has a single direction.
B) alternates only slowly.
C) is parallel to the connecting wires.

risssssss   17   2 Replies

risssssss

To steadily (constantly) increase the velocity of something requires a

To steadily (constantly) increase the velocity of something requires a

To steadily (constantly) increase the velocity of something requires a
A) steadily increasing force.
B) constant net force.
C) decreasing force.
D) none of the above

vfairch   18   2 Replies

vfairch

The fuel most likely to power tomorrow's scooters, forklifts, and busses is

The fuel most likely to power tomorrow's scooters, forklifts, and busses is

The fuel most likely to power tomorrow's scooters, forklifts, and busses is
A) hydrogen.
B) helium.
C) lithium.

Josh   18   1 Reply

kleech

The purpose of a voltage source is to provide an electrical

The purpose of a voltage source is to provide an electrical

The purpose of a voltage source is to provide an electrical
A) energy sink.
B) field.
C) pressure.

radiants   18   2 Replies

radiants

The speed of sound varies with

The speed of sound varies with

The speed of sound varies with
A) loudness.
B) frequency.
C) wavelength.
D) all of the above
E) none of the above

sorandomkay13   18   2 Replies

sorandomkay13

The quantity that most relates to the size of an object is

The quantity that most relates to the size of an object is

The quantity that most relates to the size of an object is
A) mass.
B) weight.
C) volume.
D) none of the above

TheFulcan   19   2 Replies

TheFulcan

The greater efficiency achieved with the curved blades of a Pelton wheel is due to

The greater efficiency achieved with the curved blades of a Pelton wheel is due to

The greater efficiency achieved with the curved blades of a Pelton wheel is due to
A) bouncing.
B) greater time of water impact.
C) rotational momentum.
D) divided impulse.

malry187   19   2 Replies

malry187

The planet Earth loses heat primarily by

The planet Earth loses heat primarily by

The planet Earth loses heat primarily by
A) conduction.
B) convection.
C) radiation.
D) all of the above
E) none of the above

softballjunkie1   19   2 Replies

softballjunkie1

Direct current is normally produced by a

Direct current is normally produced by a

Direct current is normally produced by a
A) battery.
B) generator.
C) both of these
D) neither of these

alockridge95   19   3 Replies

GamerGeek

What is the speed of a 4-kg ball with a momentum of 12 kgm/s?

What is the speed of a 4-kg ball with a momentum of 12 kgm/s?

What is the speed of a 4-kg ball with a momentum of 12 kgm/s?
A) 3 m/s
B) 4 m/s
C) 12 m/s
D) 48 m/s
E) none of the above

ScottyAgau   20   2 Replies

ScottyAgau

Which object has zero acceleration?

Which object has zero acceleration?

Which object has zero acceleration?
A) one at rest
B) one moving at constant velocity
C) one in mechanical equilibrium
D) all of the above
E) none of the above

janderson2000   21   1 Reply

andrew.khimz

A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that bounces ...

A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that bounces ...

A fan attached to an ice sailcraft stalled on a windless day blows air into the sail that bounces backward upon impact. The boat
A) moves in the direction of the wind impact force.
B) does not move by this wind impact.
C) moves, but in the opposit

fomor   21   3 Replies

umadbra84

The unit kilowatt-hour is a unit of

The unit kilowatt-hour is a unit of

The unit kilowatt-hour is a unit of
A) energy.
B) momentum.
C) power.
D) time.

ritvikc   21   2 Replies

ritvikc

A hydraulic press, like an inclined plane, is capable of increasing energy.

A hydraulic press, like an inclined plane, is capable of increasing energy.

A hydraulic press, like an inclined plane, is capable of increasing energy.
A) sometimes true
B) always false
C) always true
D) sometimes false

ldill01   21   2 Replies

ldill01

The exhaust product from a hydrogen fuel cell is

The exhaust product from a hydrogen fuel cell is

The exhaust product from a hydrogen fuel cell is
A) carbon dioxide.
B) methane.
C) pure water.
D) nitric acid.

alockridge95   21   2 Replies

alockridge95

As water changes to ice, water molecules

As water changes to ice, water molecules

As water changes to ice, water molecules
A) absorb energy.
B) release energy.
C) retain their energy.
D) lose the quality of wetness.

hkk   21   2 Replies

hkk

According to Galileo, a rolled ball eventually comes to a stop because

According to Galileo, a rolled ball eventually comes to a stop because

According to Galileo, a rolled ball eventually comes to a stop because
A) of friction.
B) of inertia.
C) it seeks its natural state of rest.
D) all of the above

carlocarlo   22   3 Replies

Pmay23

Lift an object against the force of gravity if you want to judge its

Lift an object against the force of gravity if you want to judge its

Lift an object against the force of gravity if you want to judge its
A) mass.
B) weight.
C) both the same
D) none of the above

jboutdy   22   2 Replies

jboutdy

A kilogram is a unit of

A kilogram is a unit of

A kilogram is a unit of
A) mass.
B) weight.
C) both the same
D) none of the above

k9ikiki   22   2 Replies

k9ikiki

When a ball increases in speed by the same amount each second, its acceleration

When a ball increases in speed by the same amount each second, its acceleration

When a ball increases in speed by the same amount each second, its acceleration
A) also increases each second.
B) decreases each second.
C) is constant.
D) varies.

werstlingbum   22   2 Replies

werstlingbum

Earth exerts a force on the Moon. These two bodies make up

Earth exerts a force on the Moon. These two bodies make up

Earth exerts a force on the Moon. These two bodies make up
A) one interaction.
B) two interactions.
C) multiple interactions.

bosoxsilva   22   2 Replies

bosoxsilva

The force of air impact upon the sail of a boat is greater if the air

The force of air impact upon the sail of a boat is greater if the air

The force of air impact upon the sail of a boat is greater if the air
A) bounces upon impact.
B) encounters the sail head-on.
C) encounters the sail at a grazing angle.

pocaralho   22   1 Reply

hoofygoofy

The pressure in a liquid depends on liquid

The pressure in a liquid depends on liquid

The pressure in a liquid depends on liquid
A) density.
B) depth.
C) both of these
D) none of the above

Kei-Fukuda   22   2 Replies

Kei-Fukuda

An object in a vacuum has no

An object in a vacuum has no

An object in a vacuum has no
A) buoyant force.
B) mass.
C) weight.
D) temperature.
E) all of the above

swaggy456   22   3 Replies

abood

What is resonance and the conditions for resonance? Give examples.

What is resonance and the conditions for resonance? Give examples.

What is resonance and the conditions for resonance? Give examples.

carlocarlo   22   2 Replies

carlocarlo

The greater the hydraulic gradient the

The greater the hydraulic gradient the

The greater the hydraulic gradient the
A) slower the flow.
B) faster the flow.
C) greater the porosity.
D) less the permeability.

TArisorev   22   2 Replies

TArisorev

Once a basketball player's feet are off the floor in making a jump, the jumper's acceleration

Once a basketball player's feet are off the floor in making a jump, the jumper's acceleration

Once a basketball player's feet are off the floor in making a jump, the jumper's acceleration
A) depends on launch speed.
B) is usually greater for taller players.
C) varies with body orientation.
D) is g; no more, no less.
E) all of the above

emma.locke16   23   2 Replies

emma.locke16

Give three examples of the equilibrium rule that are not cited in the textbook.

Give three examples of the equilibrium rule that are not cited in the textbook.

Give three examples of the equilibrium rule that are not cited in the textbook.

jboutdy   23   2 Replies

jboutdy

When a 500-N parachutist opens his chute and experiences 800 N of air resistance, the net force on him is

When a 500-N parachutist opens his chute and experiences 800 N of air resistance, the net force on him is

When a 500-N parachutist opens his chute and experiences 800 N of air resistance, the net force on him is
A) 300 N downward.
B) 500 N downward.
C) 800 N downward.
D) 300 N upward.
E) 500 N upward.

werstlingbum   23   2 Replies

werstlingbum

A martial arts person breaks a board with a blow of 3000 N. The force that acts on the hand is

A martial arts person breaks a board with a blow of 3000 N. The force that acts on the hand is

A martial arts person breaks a board with a blow of 3000 N. The force that acts on the hand is
A) less than 3000 N.
B) 3000 N.
C) more than 3000 N.
D) not enough information

Nurse2294   23   2 Replies

Nurse2294

Which of these is not a form of solar energy?

Which of these is not a form of solar energy?

Which of these is not a form of solar energy?
A) wind energy
B) fossil fuel energy
C) geothermal energy
D) hydroelectric power

tftc4e   23   2 Replies

tftc4e

San Francisco Chef Manual rates the energy content of foods in units of

San Francisco Chef Manual rates the energy content of foods in units of

San Francisco Chef Manual rates the energy content of foods in units of
A) calories.
B) Calories.
C) joules.
D) Celsius degrees.

evpalmer   23   2 Replies

evpalmer

Pigs wallow in mud mainly to

Pigs wallow in mud mainly to

Pigs wallow in mud mainly to
A) decrease thermal conductivity.
B) shield themselves from the Sun.
C) cool themselves by evaporation.

frenchtoast   23   1 Reply

alejomm21

A positive ion has a deficiency of

A positive ion has a deficiency of

A positive ion has a deficiency of
A) electrons.
B) neutrons.
C) negative ions.

sarah963   23   3 Replies

ghana

A term for electric pressure is

A term for electric pressure is

A term for electric pressure is
A) current.
B) voltage.
C) electric resistance.

emma.locke16   23   3 Replies

RLF

A sustained electric current can be achieved with a

A sustained electric current can be achieved with a

A sustained electric current can be achieved with a
A) generator.
B) battery.
C) both
D) none of the above

sann0001   23   2 Replies

sann0001