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liq [111]
3 years ago
14

Which of the following is a contact force?

Physics
1 answer:
liberstina [14]3 years ago
6 0

Air resistance is type of contact force as the air should be in contact with the surface of moving

object to ocure air resistance.

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A cyclotron designed to accelerate protons has a magnetic field of magnitude 0.15 T over a region of radius 7.4 m. The charge on
klio [65]

Explanation:

It is given that,

Magnetic field, B = 0.15 T

Charge on a proton, q=1.60218\times 10^{-19}\ C

Mass of a proton, m=1.67262 \times 10^{-27}\ kg

The cyclotron frequency is given by :

f=\dfrac{qB}{2\pi m}

f=\dfrac{1.60218\times 10^{-19}\ C\times 0.15\ T}{2\pi \times 1.67262 \times 10^{-27}\ kg}

f = 2286785.40 Hz

or

\omega=14368296.44\ rad/s

\omega=1.43\times 10^7 rad/s

Hence, this is the required solution.

8 0
3 years ago
By whom, and in what setting, was the relationship between electricity and magnetism discovered?.
Leni [432]

Explanation:

Electromagnetism is the study of the electromagnetic force which is a type of physical interaction that occurs between electrically charged particles.

Hans Christian Oersted discovered the relationship between electricity and magnetism in 1820.

4 0
2 years ago
Which of the following describes the difference between a Solar and a Lunar eclipse?
valkas [14]
I think that answer is D) Which heavenly body is casting the eclipse.
A solar eclipse is the obstruction of the sun by the moon while an lunar eclipse is the blocking of the moon by the earths shadow.
4 0
3 years ago
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The peak current through a resistor is 2. 0 aa. part a what is the peak current if the resistance rr is doubled?
timofeeve [1]

When the resistance R is doubled, I = 1 A

One of the most fundamental and significant principles controlling electrical and electronic circuits is called Ohm's Law. For a linear device, it relates current, voltage, and resistance.

According to Ohm's Law, the current flowing through a circuit is inversely proportional to the resistance in the circuit and directly proportional to the applied potential difference.

Ohm's law can be written mathematically as follows:

V = IR

Where:

   V = voltage expressed in Volts

   I = current expressed in Amps

   R = resistance expressed in Ohms

If any two quantities are known, the third can be computed by manipulating the formula.

   I= V/R

   R= V/I

To know more about Ohm's law refer:

brainly.com/question/796939

#SPJ4

8 0
2 years ago
Observing neutrinos from the Sun is an important way to check the fusion rate, but it can be very tough to build a machine that
Vika [28.1K]

Answer:

The trouble that the most recent experiment, Borexino, have to overcome was that

neutrinos hardly interact with matter and so radioactive decay of ant material inside the detector could look exactly like a neutrino interaction too

5 0
3 years ago
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