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3 years ago

the kinetic energy of an object is equal to one half its mass multiplied by its speed what is the answer

Physics

1 answer:

jekas [21]3 years ago

5 0

False, it is equal to the square of the speed multiplied by the half of the mass.

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The deepest point in the ocean is 11 km below sea level, deeper than Mt. Everest is tall.

34kurt

The pressure at the depth 11 km below sea level can be calculated using

P=ρgh

P is pressure, ρ is the density of the fluid; g is the gravitational constant, h is the height from the surface, or depth that the object is submerged.

P = ( 1000 kg/ m3) ( 9.81 m.s2)( 11 000m) + 1 atm

P = 107,910,000 pa ( 1 atm/ 101 325 Pa) + 1 atm = 1066 atm

8 0

4 years ago

How much force is required to accelerate a 5 kg mass at 20 m/s^2

Studentka2010 [4]

Hello!

$\large\boxed{F = 100N}$

Use the equation F = m · a (Newton's Second Law) to solve. Substitute in the given values:

F = 5 · 20

F = 100N

6 0

3 years ago

TRUE OR FALSE! PLZ HELP

Ksju [112]

Answer:

True

Explanation:

Magnitude is the "value" the greater the value the greater the force is and vice versa

5 0

2 years ago

A simple experiment to measure the speed of sound doesn't involve a stopwatch. You can fill up along tube with water and put a t

Serhud [2]

Answer:

Explanation:

In order to answer this problem you have to know the depth of the column, we say R, this information is important because allows you to compute some harmonic of the tube. With this information you can compute the depth of the colum of air, by taking tino account that the new depth is R-L.

To find the fundamental mode you use:

$f_n=\frac{nv_s}{4L}$

n: mode of the sound

vs: sound speed

L: length of the column of air in the tube.

A) The fundamental mode id obtained for n=1:

$f_1=\frac{v_s}{4L}$

B) For the 3rd harmonic you have:

$f_3=\frac{3v_s}{4L}$

C) For the 2nd harmonic:

$f_2=\frac{2v_s}{4L}$

7 0

3 years ago

Potential energy is the energy an object has because of its __________.

jasenka [17]

Answer:

option D

Explanation:

The correct answer is option D

Potential energy of an object is because of its location.

Expression of potential energy

P E = m g H

where H is the height of the object.

g is acceleration due to gravity, 9.8 m/s²

m is the mass of the object.

Potential energy is directly proportional to the location of the object.

If the height of the object is more than the potential energy of the object will also increase.

4 0

4 years ago