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3 years ago

Any one have a clue on this one?

Physics

1 answer:

goblinko [34]3 years ago

7 0

Magnesium has more protons and neutrons than sodium

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This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters: what is the correspon

shtirl [24]

Answer: The correct answer is option (D).

Explanation:

The area under the line is 10 meters that is displacement which means that area enclosed by the right angled triangle is 10 unit squares.

So, the it can be written as:

$\text{area of triangle}=\frac{1}{2}\times velocity\times time$

$10=\frac{1}{2}\times 2.0 m/s\times time$

$time =10 seconds$

Hence the, the correct answer is option (D).

6 0

3 years ago

What does the vibrating object do to the air particles around it ?

Westkost [7]

Answer:

When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well. This makes them bump into more nearby air molecules.

7 0

3 years ago

A sphere of radius 0.03m has a point charge of q= 7.6 micro C located at it’s centre. Find the electric flux through it?

GalinKa [24]

Answer:

The electric flux through the sphere is $8.58 *10^{5} \frac{Nm^2}{C}$

Explanation:

Given

$Radius,\ r = 0.03m\\Charge,\ q =7.6\µC$

Required

Find the electric flux

Electric flux is calculated using the following formula;

Ф = q/ε

Where ε is the electric constant permitivitty

ε $= 8.8542 * 10^{-12}$

Substitute ε $= 8.8542 * 10^{-12}$ and $q =7.6\µC$ ; The formula becomes

Ф = $\frac{7.6\µC}{8.8542 * 10^{-12}}$

Ф = $\frac{7.6 * 10^{-6}}{8.8542 * 10^{-12}}$

Ф = $\frac{7.6}{8.8542} *\frac{10^{-6}}{10^{-12}}$

Ф = $\frac{7.6}{8.8542} *10^{12-6}}$

Ф = $0.85834970974 *10^{12-6}}$

Ф = $0.85834970974 *10^{6}}$

Ф = $8.5834970974 *10^{5}}$

Ф = $8.58 *10^{5} \frac{Nm^2}{C}$

Hence, the electric flux through the sphere is $8.58 *10^{5} \frac{Nm^2}{C}$

7 0

3 years ago

A wave with a period of .0005 s/cycle has what frequency? Please help me my teacher didn’t explain good .

zmey [24]

Answer: frequency f = 2000 1/s (Hz)

Explanation: period T means time for one cycle and frequency f tells how many cycles there are in seconds. Unit of frequency is 1/s= Hz. Period T = 1/f and frequency f= 1/T.

E.g is T= 0.01 s then f= 1/ (0.01 s) = 100 Hz. And I'd frequency is 20 Hz,

T= 1/(20 Hz)= 0.05 s. So, if T = 0.005 s, f= 1/T

8 0

3 years ago

How much time should be allowed for a 605-mile car trip if the car will the traveling at an average speed of 55 Miles per hour?

Luda [366]

T = d/s

T = 605/55

T = 11

Hope that helps!!

3 0

3 years ago

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