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Eddi Din [679]
3 years ago
11

What type of device is a car engine?

Physics
1 answer:
Margaret [11]3 years ago
7 0

A heat engine that uses work to move heat

hope this helps :)

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A rock is thrown downward from a height of 207 m with an initial velocity of 5.37 m/s. Approximately how fast will it it be movi
Zolol [24]

List the known information:

x_0=207 \text{ m}\\v_0=-5.37 \text{ m/s}\\t=3.03 \text{ s}\\a=-g=-9.8 \text{ m/s}^2

Use the kinematic equation v=v_0+at.

Plug in the given values:

v=-5.37 \text{ m/s}+(-9.8 \text{ m/s}^2)(3.03 \text{ s})=-35.064 \text{ m/s}

This would be 35.064 m/s downward, or 35 m/s downward with significant figures taken into account.

4 0
3 years ago
Use Wien’s Law to calculate the peak wavelength of Betelgeuse, based on the temperature found in Question #8. Note: 1 nanometer
kodGreya [7K]

The peak wavelength of Betelgeuse is 828 nm

Explanation:

The relationship between surface temperature and peak wavelength of a star is given by Wien's displacement law:

\lambda=\frac{b}{T}

where

\lambda is the peak wavelength

T is the surface temperature

b=2.898\cdot 10^{-3} m\cdot K is Wien's constant

For Betelgeuse, the surface temperature is approximately

T = 3500 K

Therefore, its peak wavelength is:

\lambda=\frac{2.898\cdot 10^{-3}}{3500}=8.28\cdot 10^{-7} m = 828 nm

Learn more about wavelength:

brainly.com/question/5354733

brainly.com/question/9077368

#LearnwithBrainly

8 0
4 years ago
The tailor makes 4 blue shirts for every 3 white shirts he makes. If the tailor makes 12 white shirts in 1 day, how many blue sh
Sati [7]
4 blue = 3 white
x blue = 12 white?

\frac{4 blue}{3 white} =  \frac{x blue}{12 white}

Cross multiply
48 = 3x
x = 16 blue

Another way to do this is figure how many times 3 whites go into 12 whites.
That's 4 times.
So 4 blue x 4 = 16 blue
8 0
4 years ago
Read 2 more answers
A 4.00-kg particle moves along the x axis. Its position varies with time according to x 5 t 1 2.0t 3, where x is in meters and t
White raven [17]

Answer:

Explanation:

Given equation is ,

x =t + 2 t³ ,

dx/dt = velocity ( v ) = 1 + 6 t²

a) kinetic energy = 1/2 m v² = .5 x 4 ( 1 + 6 t² )² = 2 ( 1 + 6 t²)²

b ) Acceleration = dv /dt = 12 t .

force( F ) = mass x acceleration = 4 x 12 t = 48 t

Power = force x velocity = 48 t x ( 1 + 6 t²). = 48 t + 288 t³ )

work done = ∫ F dx =∫ 48 t x( 1 + 6t² )dt ; =  [48t²/2 + 48 x 6 x t³ /3 = 24 t² + 96 t³ )]₀² =  864 J

6 0
3 years ago
Read 2 more answers
Suppose you want to whisper to the student next to you in class, what must you remember to do with your vocal cords
Juliette [100K]
You have to lower you vocals
7 0
4 years ago
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