PHYSICS MIDDLE SCHOOL

Tom left for his friend's house. He drove 60 km in an hour. When he got to John's house, he wondered how fast he had been driving. What formula would he use to determine his speed?

Answers

Answer 1

Answer:

Answer: Tom drove 60 km/hr fast

Speed = Distance traveled / time taken

Explanation:

Given that:

Distance traveled by Tom = 60 km

Time taken by Tom = 1 hour

Speed = ?

Since speed is obtained by dividing distance traveled by the time taken, hence the formula to use is as follows:

speed = distance / time

Speed = 60 km / 1 hour

Speed = 60 km/hr

Thus, Tom had been driving 60 km/hr fast, using the formula "speed = distance / time"

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How do the circulatory system and the respiratory system work together?

Answers

The circulatory system tends to pump blood around the whole body, while the respiratory system tend to facilitate the exchange of gas in the body so then the blood will look totally fresh. In simpler terms, the heart is connected to the lungs through the means of arteries and veins.

Answer:

Explanation:

Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, what can he calculate for the circuit?A. current (C)
B. current (I)
C. voltage (V)
D. voltage (A)

Answers

Answer: The correct answer is Option C.

Explanation:

Ohm's Law is the law which has given a relationship between current, potential difference and the resistance in a circuit. This law states that the current flowing through the conductor is directly proportional to the potential difference across two points.

Mathematically,

$V\propto I$

or,

$V=IR$

where,

V is the potential difference across two points. It is expressed in Volts (V).

I is the current through the conductor. it is expressed in Amperes (A).

R is the resistance. It s expressed in Ohms $(\Omega)$

We are given:

$I=1.2A\nR=24\Omega$

By putting these values in above equation, we can easily calculate the value of voltage expressed in volts.

Hence, the correct answer is Option C.

The right answer for the question that is being asked and shown above is that: "C. voltage (V)" Jaipal measures a circuit at 1.2 A and 24 . Using Ohm’s law, he can calculate for the circuit is that through the C. voltage (V)

What TWO things affect the gravitational force acting on an object?

Answers

The strength of the gravitational forces between two masses depends on

-- the product of the masses,

-- the distance between their centers of mass.

mass and distance (between two objects) are those TWO things that affect the gravitational force acting on an object

What kind of telescope uses only lenses?

Answers

A refracting telescope is a type of optical telescope that uses a lens as its objective to form an image.

What is a telescope?

Astronomers use a telescope to observe distant things. Curved mirrors are used by the majority of telescopes, including all large telescopes, to collect and concentrate light from the night sky.

Refracting telescopes have been used for centuries and are still commonly used today, especially for viewing bright objects such as the Moon and planets.

However, they have some limitations compared to other types of telescopes, such as difficulty in making large lenses without distortion and the tendency to produce chromatic aberration, which can cause images to appear blurred or discolored.

Despite these limitations, refracting telescopes remain popular among amateur astronomers and are still used in many scientific applications.

Learn more about telescopes here:

brainly.com/question/556195

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Refracting telescope

Which statement represents how charges interact? (2 points)A.Negative charges are attracted to negative charges.

B.Neutral charges are attracted to neutral charges.

C.Opposite charges are not attracted to each other.

D.Positive charges are attracted to negative charges.

Answers

D.Positive charges are attracted to negative charges.

Answer:

D. Positive charges are attracted to negative charges.

Explanation:

The interaction between two like-charged objects is repulsive. The interaction between two oppositely charged objects is attractive. ... Positively charged objects and neutral objects attract each other; and negatively charged objects and neutral objects attract each other.

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What is the reason there is a belt of asteroids between Mars and Jupiter?

Answers

We don't know. It could be material that just couldn't condense
into a planet in that region.

(In fact, the way the planets are arranged, it turns out that the
average distance from the sun to the center of the asteroid belt
is exactly where we would expect to find a planet.)

If the asteroids are actually material that failed to condense into a
planet, then the huge gravity of Jupiter might have been responsible
for keeping the material disturbed.

Its due to Jupiter's huge huge gravitational pull

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