1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sammy [17]
4 years ago
14

A hot metal plate at 150 degree C has been placed in air at room temperature. Which event would most likely take place over the

text few minutes
Physics
1 answer:
Daniel [21]4 years ago
5 0

When hot metal plate is placed in air at room temperature

Then due to temperature difference heat flow will start from higher temperature to lower temperature

Here heat flow is from hot plate to room

The heat flow here is of two types

1. Convection flow of heat

In this phenomenon the thermal energy is transferred from plate to room by the thermal motion of air molecules in the room

2. Radiation heat flow

In this phenomenon the thermal energy is transferred by electromagnetic waves which transmits from the plate

This flow of heat will continue till the temperature of room and plate will become equal

You might be interested in
A helicopter flies southeast with a ground speed of 250 km/h. If the wind
notsponge [240]

Answer:

C. 233 km/h

Explanation:

Ground speed = air speed + wind speed

250 km/h = v + 17 km/h

v = 233 km/h

4 0
3 years ago
A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. The
Goshia [24]

Answer:

0.629\ \text{rad/s}^2 counterclockwise

9.98\ \text{s}

Explanation:

r_1 = Small drive wheel radius = 2.2 cm

\alpha_1 = Angular acceleration of the small drive wheel = 8\ \text{rad/s}^2

r_2 = Radius of pottery wheel = 28 cm

\alpha_2 = Angular acceleration of pottery wheel

As the linear acceleration of the system is conserved we have

r_1\alpha_1=r_2\alpha_2\\\Rightarrow \alpha_2=\dfrac{r_1\alpha_1}{r_2}\\\Rightarrow \alpha_2=\dfrac{2.2\times 8}{28}\\\Rightarrow \alpha_2=0.629\ \text{rad/s}^2

The angular acceleration of the pottery wheel is 0.629\ \text{rad/s}^2.

The rubber drive wheel is rotating in clockwise direction so the pottery wheel will rotate counterclockwise.

\omega_i = Initial angular velocity = 0

\omega_f = Final angular velocity = 60\ \text{rpm}\times \dfrac{2\pi}{60}=6.28\ \text{rad/s}

t = Time taken

From the kinematic equations of linear motion we have

\omega_f=\omega_i+\alpha_2t\\\Rightarrow t=\dfrac{\omega_f-\omega_i}{\alpha_2}\\\Rightarrow t=\dfrac{6.28-0}{0.629}\\\Rightarrow t=9.98\ \text{s}

The time it takes the pottery wheel to reach the required speed is 9.98\ \text{s}

4 0
3 years ago
Rex makes himself a bowl of cereal. He puts 28 g of cereal in a bowl and then adds 245 g of milk. Before eating the cereal, he r
Galina-37 [17]

Answer:

A.)

Explanation:

Because you didn't add anything or take anything away.

5 0
3 years ago
The graph below shows the energy sources used to generate electricity in the United States.
DedPeter [7]

The correct answer is - D. 1 percent.

The United States are the biggest consumer of electricity in the world. Because of that the United States are using multiple different sources in order to satisfy the demand for the electricity. The solar energy though accounts for only 1% of the total amount of produced electricity in the country and that is concerning. The biggest concern of course is the environmental one as the majority of the electricity is produced by sources that are polluting the environment. The other concern is that the United States are not using their potential in gaining more electricity from the solar radiation when taken in account that they have very large areas in the country that have a lot of intense solar radiation and clear skies throughout most of the year.

5 0
3 years ago
Read 2 more answers
HELP WILL MARK BRAINLIEST!!
kherson [118]

Answer:15

Explanation:

8 0
3 years ago
Other questions:
  • What is the face to getting to the next one to 33+33
    5·1 answer
  • Why does a wave undergo a 180° phase change at a fixed boundary?
    6·1 answer
  • A satellite has a mass of 5850 kg and is in a circular orbit 4.1 x10 to the 5th power m above the surface of a planet. The perio
    6·1 answer
  • A rectangular metal plate measures 0.24 m long and 0.9 m wide. The plate is heated to a temperature of 1,033 K by passing a curr
    9·1 answer
  • Scientific notation for 0.000468
    8·1 answer
  • How is impact force and impact time related when describing the same impulse?
    6·1 answer
  • Please why does a simple pendulum graph fail to pass through the origin ?​
    6·2 answers
  • The law of conservation of momentum states that (Help Asap!)
    5·1 answer
  • When two forces act in the same direction on an object, the net force is found by ....................the forces.
    5·2 answers
  • By experiment, determine what makes a force attractive or repulsive. Describe your experiments and observations with some exampl
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!