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"
Answer:
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.
Explanation:
B. current (I)
C. voltage (V)
D. voltage (A)
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,
or,
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
We are given:
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.
A refracting telescope is a type of optical telescope that uses a lens as its objective to form an image.
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:
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Refracting telescope
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.
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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