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Physics

Kingston Lutz

1. Hydrogen gas and oxygen gas, when combined, form liquid water. What type

of change is this, and why?

A) Chemical change, because a gas is produced.

B) Physical change, because it is changing from gas to liquid.

C) Chemical change, because a new substance is produced.

D) Physical change, because atoms are not gained or lost.

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Physics

Jared Underwood

The law of conservation of energy states ...

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Physics

Pham

How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.

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Physics

Guest

Number of electrons in outer ring for phosphorus

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Physics

Cierra

How is mass connected to matter?

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Physics

Khloe Murillo

Which of the following forces are most closely related to firm effects within a pharmaceutical industry?

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Physics

Brent Morse

During the summer months, why is the average temperature much higher in many regions of the globe?

A. There is no snow.

B. The amount of sunlight reaching the environment stays constant.

C. More sunlight reaches the environment.

D. Less sunlight reaches the environment.

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Physics

Alisa Hunt

A car travels with an average speed of 22 m/s. what is this speed in km/s

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Physics

Kennedi Wiley

Consider a circuit connected in parallel with three resistors, each providing a

resistance of 6, 8, and 4, respectively. Using the formula for total resistance in a

parallel circuit, what is the total resistance of the circuit?

a. 180

b. 1/240

c. 24/130

d. 13/240

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Physics

Johan Lucero

A swing has a period of 10 seconds. What is its frequency?

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Physics

Max Roberts

You inflate a front tires on your car to 22 psi. Later, you measure your blood pressure, obtaining a reading of 127/61, the readingbeing in mm Hg. In metric countries (which is to say, most of theworld), these pressures are customarily reported in kilopascals (kPa).

In kilopascals, what are (a) your tire pressure

kPa

(b) your blood pressure?

/ kPa

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Physics

Emery Lynch

Which substance is made of molecules?

a. water

b. table salt

c. aluminum foil

d. pure gold necklace

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Physics

Sellers

How does using a ramp to load boxes into a truck make work easier?

A. Using the ramp increases the amount of force needed to move the boxes, but the boxes must be moved over a shorter distance.

B. Using the ramp increases the amount of force needed to move the boxes, but the boxes must be moved over a longer distance.

C. Using the ramp decreases the amount of force needed to move the boxes, but the boxes must be moved over a shorter distance.

D. Using the ramp decreases the amount of force needed to move the boxes, but the boxes must be moved over a longer distance.

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Physics

Aden Moore

If the mass of a material is 50 grams and the volume of the material is 12 cm^3, what would the density of the material be?

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Physics

Carter Chase

True or False? An airplane is flying West at 200 kilometers per hour 2 hours later it is flying West at 300 km/h its average acceleration is 100 kilometers per hour.

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