What chromosomes are found in body cells but not sex cells

An alpha particle can be produced in certain radioactive decays of nuclei and consists of two protons and two neutrons. The part

Varvara68 [4.7K]

Answer:

Explanation:

charge, q = 2e = 2 x 1.6 x 10^-19 C = 3.2 x 10^-19 C

mass, m = 4 u = 4 x 1.661 x 10^-27 kg = 6.644 x 10^-27 kg

Radius, r = 4.5 cm = 0.045 m

Magnetic field, B = 1.20 T

(a) Let the speed is v.

$v=\frac{Bqr}{m}$

$v=\frac{1.20\times 3.2\times 10^{-19}\times 0.045}{6.644\times 10^{-27}}$

v = 2.6 x 10^6 m/s

(b) Let T be the period of revolution

$T=\frac{2\pi r}{v}$

$T=\frac{2\times 3.14\times 0.045}{2.6\times 10^{6}}$

T = 1.09 x 10^-7 s

(c) The formula for the kinetic energy is

$K=\frac{B^{2}\times q^{2}\times r^{2}}{2m}$

$K=\frac{\left ( 1.20\times 3.2 \times 10^{-19}\times 0.045 \right )^{2}}{2\times 6.644\times 10^{-27}}$

K = 2.25 x 10^-14 J

(d) Let the potential difference is V.

K = qV

$V = \frac{K}{q}$

$V= \frac{2.25\times 10^-14}{3.2\times 10^{-19}}$

V = 70312.5 V

5 0

3 years ago

Newton's three laws of motion

AfilCa [17]

Answer:

The third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A. Notice that the forces are exerted on different objects.

Explanation:

4 0

3 years ago

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a square loop of wire side 3.0 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 37 de

Varvara68 [4.7K]

Explanation:

Below is an attachment containing the solution.

8 0

3 years ago

A ____ mirror will diverge light rays. <br> a. convex <br> b. plane <br> c. concave

zhannawk [14.2K]

Light rays will be diverged by a convex mirror.

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4 years ago

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Elton's mother has been nagging and nagging that he should stop fooling around with his guitar and start studying. Finally, in o

horrorfan [7]

The correct answer is b. negative reinforcement. Since Elton followed his mother to stop her from nagging, it is called negative reinforcement. Had she used other ways to persuade him to study, it would be a positive reinforcement. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.

7 0

3 years ago