A cube is measure 1 cm on each side and has a mass of 2 grams. Will it float on water?

Answers

Answer 1

Answer: Density = mass/volume
The density of water is 1g/cm^3

Density of the cube=2g/1cm^3
Density=2g/cm^3
Anything over the density of water will sink. The cube will not float.

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A heavy object falls with the acceleration as a light object during free fall. Why?

Answers

A heavy object falls with the acceleration as a light object during free fall because of acceleration due to gravity.

Explanation:

A motion can be termed as free fall when the object is completely under the influence of gravity. So in this case, no other force will be acting on the object other than the gravitational force. As the gravity influences the object in free fall, the acceleration attained by any object in free fall is same. And this acceleration is termed as acceleration due to gravity. Since, the gravity gives the acceleration to every object experiencing free fall, then the acceleration should be constant. Thus, a heavy object and a light object will have same acceleration during free fall.

How fast will a cart be moving if a force of 200 N is applied to a 50 kg cart for 10 sec?

Answers

Acceleration = (force) / (mass)

If there is no friction . . .

Acceleration = (200N) / (50 kg) = 4m/s²

Change in speed = (acceleration) x (time) = (4 m/s²) x (10 sec) = 40 m/s

Final speed = (speed of the cart before the force began) + (40 m/s more)

(That's about 89 mph faster than the cart was moving before the force started.)

I'm assuming that the cart starts from rest.

Initial velocity (vi): 0 m/s
Final velocity (vf): ?
Acceleration (a): ?
Force (F): 200 N
Mass (m): 50 kg
Time (t): 10 s

F= ma
200 N= (50kg)(a)
a= +4 m/s^2

a= (vf-vi)/t
+4 m/s^2= (vf - 0m/s)/10s
vf= 40 m/s

Answer: the cart will be moving 40 m/s.

Violet light has a wavelength of 4.10x10 to the power of -12m what is the frequency?

Answers

Frequency of any wave = (the wave's speed) divided by (its wavelength)

Speed of light = about (3 x 10 to the 8) meters per second, in vacuum.

Frequency = (3 x 10 to the 8) / (4.1 x 10 to the -12) = 7.317 x 10 to the 19 Hz.

That's the same as 73,170,000,000 GHz.

Note:
That's the answer for the information given in the question, but the information in
the question is incorrect by 5 orders of magnitude. The wavelength of violet light,
or anything in the visible range, is a few hundred 'nanometers' ... a few hundreds
of 10 to the -9 . So the number in the question should be 4.10 x 10 to the -7,
not -12, and the frequency should be 731,700 GHz.

if you have a mass of 55 kg and you are standing 3 meters away from your car, which has a mass of 1234 kg, how strong is the force of gravity between you and the car?

Answers

From Newton's gravitational law, the force of gravity between you and the car is 5.03 x $10^(-7)$ Newton strong.

NEWTON'S GRAVITATION LAW

According to Newton, the force of attraction between two masses of directly proportional to the product of the masses and inversely proportional to the square of the distance between them. That is,

F = $(GMm)/(r^(2) )$

From the question, the given parameters are

M = 1234 kg

m = 55 kg

r = 3 m

G = 6.67 x $10^(-11)$ N $m^(2)kg^(-2)$

Substitute all the parameters into the formula

F = (6.67 x $10^(-11)$ x 1234 x 55) / $3^(2)$

F = 4.527 x $10^(-6)$ / 9

F = 5.03 x $10^(-7)$ N

Therefore, the force of gravity between you and the car is 5.03 x $10^(-7)$

Newton strong.

Learn more about Gravitational force here: brainly.com/question/2537310

Gravitational force between two masses is given by formula

$F = (Gm_1m_2)/(r^2)$

here we know that

$m_1 = 55 kg$

$m_2 = 1234 kg$

$r = 3 m$

$G = 6.67 * 10^(-11) Nm^2/kg^2$

now from the above equation we will have

$F = ((6.67 * 10^(-11))(55)(1234))/(3^2)$

$F = 5.03 * 10^(-7)N$

so above is the gravitational force between car and the person

10 POINTS!!! Determine the pressure of your book in pascals (Pa). Show your work! (the pressure of the book in psi is 0.03 psi) Also the weight of the book is 3 lbsHInt: 1 Pa = 1 N/m^2 Weight (force) = ma 1 kg = 2.2 lbs 1 inch = 2.54 cm 1m = 100 cm

Answers

You've listed a lot of data here, in both metric and customary units,
and I'm not even sure it's all needed. Let me try and boil it down:

Pressure on a surface =
   (total force on a surface) divided by (area of the surface).

The answer to the question is the pressure expressed in pascals.
There's actually enough information here to answer the question
in 2 different ways. We could ...

-- simply convert (0.03 pound per inch²) to pascals, or
-- go through the whole calculation of force, area, and then their quotient.

To me, converting 0.03 psi to Pa looks easier.

-- 1 pascal = 1 newton / 1 meter²

-- On Earth, 1 kilogram of mass weighs 9.8 Newtons and 2.2 pounds.
From this, we can calculate that

2.2 pounds of force = 9.8 newtons of force.

   1 pound = 4.45 newtons

(0.03 pound/inch²) x (4.45 newton/pound) x (1inch/2.54cm)² x (100cm/1m)² =

(0.03 x 4.45 x 1² x 100²) / (2.54² x 1²)    newton/meter² = 206.9 Pa .

What is happening to the earth's field right now.

Answers

it is bracking down because of all the pollutoin

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