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2 years ago

2. An electron and a proton are separated by 5 cm:

Physics

1 answer:

Diano4ka-milaya [45]2 years ago

7 0

Answer:

a) the charge of an electron is equivalent to the magnitude of the elementary charge but barring a negative sign since the side of the elementary charge is roughly 1.602 * 10 - 19 Columbus then the charge of the electronic is-1.602 * 10 - 19

b) b=2T on the electron moving in the magnetic field

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A person can jump a maximum horizontal distance (by using a 45◦ projectile angle) of 5 m on Earth. The acceleration of gravity i

snow_lady [41]

Answer:30 m

Explanation:

Given

Maximum Horizontal distance is 5 m on earth

launching angle $=45^{\circ}$

Acceleration due to gravity on earth is $9.8 m/s^2$

Acceleration due to gravity on moon is $\frac{9.8}{6}=1.63 m/s^2$

Range of projectile is given by

$R=\frac{u^2\sin 2\theta }{g}$

$R_{earth}=\frac{u^2\sin 2\theta }{g}=5$ ----1

$R_{moon}=\frac{u^2\sin 2\theta }{\frac{g}{6}}$ -----2

Divide 1 & 2

$\frac{5}{R_{moon}}=\frac{1}{6}$

$R_{moon}=30 m$

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2 years ago

A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?

34kurt

Explanation:

t = usin©/g

Where t is the time to reach the maximum height

Time spent in air is T = 2t

Hence, T = 2usin©/g

T = 2 x 20 x sin 65°/ 9.8

T = 3.69s

8 0

3 years ago

A baseball bat is 32 inches (81.3 cm) long and has a mass of 0.96 kg. Its center of mass is 22 inches (55.9 cm) from the handle

s344n2d4d5 [400]

Answer:

0.24 kgm²

Explanation:

$L$ = length of the bat = 81.3 cm = 0.813 m

$m$ = mass of the bat = 0.96 kg

$d$ = distance of the center of mass of bat from the axis of rotation = 55.9 cm = 0.559 m

$T$ = Period of oscillation = 1.35 sec

$I$ = moment of inertia of the bat

Period of oscillation is given as

$T = 2\pi \sqrt{\frac{I}{mgd}}$

$1.35 = 2(3.14) \sqrt{\frac{I}{(0.96)(9.8)(0.559)}}$

$I$ = 0.24 kgm²

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3 years ago

Bill was really bored at work. During his break, he decided to check his carotid artery. He placed both fingers on his neck and

Sergeeva-Olga [200]

Answer:

72 beats per minute

Explanation:

Heart beat causes the flow of blood round the body. This heart beat can be felt as pulse in the wrist or neck carotid artery. The heart rate which is measured in beats per minute (BPM) is used to determine the number of heart beats per minute.

You can calculate your BPM using the carotid artery found in the neck close to the windpipe.

Given that for 20 seconds, Bill had a total of 24 beats.

60 seconds = 1 minute.

Hence, Bill's BPM = (24 beats per 20 seconds) * (60 seconds per minute) = 72 beats per minute

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2 years ago

A baseball player runs 27.4 meters from the

sleet_krkn [62]

6.0 m longer because the player ran 3 and came back 3 at the very end, which looks like he went nowhere but in reality he ran 6.

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2 years ago

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