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earnstyle [38]
3 years ago
10

5. If the momentum of a body is increased by 100% then the percentage increase in kinetic

Physics
1 answer:
Mnenie [13.5K]3 years ago
5 0
The answer is the letter ( d )
You might be interested in
A sound wave from a siren has an intensity of 111.2 W/m2 at a certain point, and a second sound wave from a nearby ambulance has
Kazeer [188]

Answer:

The intensity level of the sound wave due to the ambulance is 153.5 dB.

Explanation:

The intensity level of the sound wave due to the ambulance can be calculated using the following equation:

\beta = 10log(\frac{I}{I_{0}})

<u>Where</u>:

I: is the intensity of the sound wave from a siren = 111.2 W/m²      

I₀: is the reference intensity = 1.0x10⁻¹² W/m²

\beta = 10log(\frac{111.2 W/m^{2}}{1.0 \cdot 10^{-12} W/m^{2}}) = 140.5 dB

Now, since the second sound wave from a nearby ambulance has an intensity level 13 dB we have:

I_{a} = 13 dB + 140.5 dB = 153.5 dB

Therefore, the intensity level of the sound wave due to the ambulance is 153.5 dB.

I hope it helps you!                      

5 0
3 years ago
Where is the majority of the mass located in an atom
bogdanovich [222]
It's located in the nucleus
7 0
3 years ago
A piston above liquid in a closed container has an area of 1m2. The piston carries a load of 350 kg. What will be the external p
grandymaker [24]
<span>Pressure = force / area</span>

I assume that 350kg is the mass 
Therefore, 

350 x 9.8 (gravity) = 3430N

3430 / 1 = 3430Pa

3.43 KPa


5 0
3 years ago
Read 2 more answers
Help with these three
Elenna [48]
The first: alright, first: you draw the person in the elevator, then draw a red arrow, pointing downwards, beginning from his center of mass. This arrow is representing the gravitational force, Fg.
You can always calculate this right away, if you know his mass, by multiplying his weight in kg by the gravitational constant
g = 9.81 \frac{m}{s {}^{2} }
let's do it for this case:
f_{g}  = m \times g \\ f _{g}  = 65kg \times 9.81 \frac{m}{s {}^{2} }  = 637.65
the unit of your fg will be in Newton [N]
so, first step solved, Fg is 637.65N
Fg is a field force by the way, and at the same time, the elevator is pushing up on him with 637.65N, so you draw another arrow pointing upwards, ending at the tip of the downwards arrow.
now let's calculate the force of the elevator
f = m \times a \\ f = 65 \times 5 \frac{m}{s {}^{2} }  \\ f = 325n
so you draw another arrow which is pointing downwards on him, because the elevator is accelating him upwards, making him heavier
the elevator force in this case is a contact force, because it only comes to existence while the two are touching, while Fg is the same everywhere
8 0
3 years ago
In his explanation of the threshold frequency in the photoelectric field, Einstein reasoned that the absorbed photon must have t
Doss [256]

Answer:

4.6×10^-7 m or 0.46nm

Explanation:

From

Wo= hc/λ

Where:

Wo= work function of the metal

h= planks constant

c= speed of light

λ= wavelength

λ= hc/Wo

λ= 6.6×10^-34 × 3×10^8/4.30×10^-19

λ= 4.6×10^-7 m

5 0
3 years ago
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