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3 years ago

12

Which statement is always true about objects which exert gravitational force on each other? A. They are a very large size. B. Th

ey exist only in outer space. C. They are a speed. D.They are a mass.

1 answer:

Keith_Richards [23]3 years ago

7 0

Answer:

The answer is D. They are a mass.

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If a car is traveling 27 meters in 3 seconds, what is its speed?

KIM [24]

9 because speed=distance/ time

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2 years ago

Neglecting friction, of a pendulum bob has 100 joules of kinetic energy at the bottom of its swing, how much potential energy do

galben [10]

100 joule of kinetic energy

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3 years ago

What would the final temperature be if 8.94 X 10 3 joules of heat were added to 454 grams of copper at 23.0 o C?

ozzi

Answer: $74.1^0C$

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

$Q=m\times c\times \Delta T$

Q = Heat absorbed= $8.94\times 10^3$ Joules

m= mass of copper = 454 g

c = specific heat capacity = $0.385J/g^0C$

Initial temperature of the copper = $T_i$ = 23.0°C

Final temperature of the water = $T_f$ = ?

Change in temperature , $\Delta T=T_f-T_i$

Putting in the values, we get:

$8.94\times 10^3=454\times 0.385\times (T_f-23.0)^0C$

$T_f=74.1^0C$

The final temperature of copper will be $74.1^0C$

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3 years ago

How do magnetic trains work and what advantages do they have compared to regular trains

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Answer:

magnetic trains works at the principle of repel on of the advantage is that they are fast and dont really need diesel

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3 years ago

Suppose the wavelength of the light is 460 nm. how much farther is it from the dot on the screen in the center of fringe e to th

gavmur [86]

The difference is 920nm.

<h3>What is called Wavelength?</h3>

The wavelength can be defined as the separation between wave crests. Additionally, a wide variety of objects move in waves, including light, the earth or ground, water, strings, air, and sound waves. Furthermore, we use the Greek letter lambda to denote the wave's wavelength. In addition, the wave's wavelength is determined by dividing its velocity by its frequency. Additionally, we employ meters (m), which is the unit used to indicate wavelength in meters.

Positive interference is produced by a bright fringe, and the wavelength is always multiple.

The difference at the center fringe is (460 nm)(0) = 0.

The difference for the first maximum is (460 nm)(1) = 460 nm.

The difference for the second maximum is (460 nm)(2) = 920 nm.

As a result, the difference for maxima n is (460 nm) (n)

Since C is on the second maximum in the image that was submitted, the difference is stated as (460 nm)(2) = 920 nm.

Consequently, the screen's central dot on the fringe E to the left slit is 920 nm.

To learn more about Wavelength, visit:

brainly.com/question/13533093

#SPJ4

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1 year ago