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3 years ago

A bus accelerates forward. If an apple were on the floor of the bus it would move forward.

Physics

1 answer:

Paladinen [302]3 years ago

4 0

Answer:

False

Explanation:

Since it is on the bus, it would not move forward because the outside acceleration cannot be considered.

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The apartment’s explosion, reportedly caused by a gas leak, produced a violent release of gas and heat. The heat increased the _

BabaBlast [244]

Increased the temperature in the room, which means an increase in the airs connect molecular energy

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3 years ago

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Volume of an block is 5 cm3. If the density of the block is 250 g/cm3, what is the mass of the block ?

wlad13 [49]

Answer:

The mass of the block is 1250g.

Explanation:

Given that the formula for density is ρ = mass/volume. Then you have to substitute the values into the formula :

$ρ = \frac{mass}{volume}$

Let density = 250,

Let volume = 5,

$250 = \frac{m}{5}$

$m = 250 \times 5$

$m = 1250g$

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3 years ago

Which formula below correctly states Coulomb's Law?

katovenus [111]

<h2>QUESTION:- Which formula below correctly states Coulomb's Law?</h2>

<h2>OPTIONS:- </h2>

$A. \: \: \: \: F = kqq/r^ 2 \\B. \: \: \: \: F = kqq/r \\C. \: \: \: \: F = qq/kr^ 2 \\D. \: \: \: \: F = kr^2 /qq \\$

<h2>ANSWER:- </h2>

F is directly proportional to the product of the charges

$F∝qq$

F is inversely proportional to the square of the distance between them

$F∝ \frac{1}{ {r}^{2} }$

from above 2 equation:-

we get:-

$F∝ \frac{qq}{ {r}^{2} }$

To remove proportionality sign we use constant for this case we r using constant k

$F = \frac{Kqq}{ {r}^{2} }$

So your answer is :-

OPTION A.

$F = \frac{Kqq}{ {r}^{2} }$

3 0

3 years ago

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The owner of a van installs a rear-window lens that has a focal length of -0.304 m. When the owner looks out through the lens at

Naddika [18.5K]

Answer:

$p =-1.03$

Explanation:

From the question we are told that:

Focal length of lens $f=-0.304 m$

Image distance $q=0.237 m$

Height of image $H_i=0.343$

Generally the lens equation is mathematically given by

$\frac{1}{f} = \frac{1}{q} - \frac{1}{p}$

Where $p$ is Subject

$p = \frac{(qf) }{(f - q)}$

$p = \frac{(-0.237)(-0.304)) }{((-0.304) - (0.237))}$

$p =-1.03$

Therefore the distance between the person and the car is

$p =-1.03$

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3 years ago

if a free falling rock were equipped with a speedometer, by how much would it's speed readings increase with each second IF it w

Kaylis [27]

Accelleration(a) is changing of velocity in second.
free fall a = g
speed increase = a = g = 20 (m/s) / s

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3 years ago