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
vlada-n [284]
3 years ago
15

A refigerator is designed to remove 3 kW from the cold space at -10C while it rejects heat to the kitchen at 25 C. The rate of t

he reversible work is:______
Physics
1 answer:
Stells [14]3 years ago
7 0

Answer:

b

Explanation:

You might be interested in
A scuba diver shines a flashlight from beneath the surface of water (n = 1.33 such that the light strikes the water-air boundary
Len [333]
The beam is refracted at 53.17-degree angle (asin 0.800414 = 53.17-degree). This problem can be solved by using the Snell's Law which described the refracted beam angle which traveled through a different media, in this case, through water and air. The formula of Snell's Law is stated as n1 sin θ1= n2 sin θ2. In this formula n1 is the refraction index of medium 1, θ1 is the normal light angle in the medium 1, n2 is the refraction index of medium 2, and θ2 is the normal light angle in the medium 2<span>. </span>
7 0
3 years ago
Why do black holes have a large gravitational pull that even light cannot escape from
Annette [7]

Answer:

Because matter has been squeezed into a tiny space.

Explanation:

According to NASA, this can happen when a star is dying.

8 0
3 years ago
Read 2 more answers
A device called an insolation meter is used to measure the intensity of sunlight. It has an area of 100 cm2 and registers 6.50 W
labwork [276]

Answer:

<h2>650W/m²</h2>

Explanation:

Intensity of the sunlight is expressed as I  = Power/cross sectional area. It is measured in W/m²

Given parameters

Power rating = 6.50Watts

Cross sectional area = 100cm²

Before we calculate the intensity, we need to convert the area to m² first.

100cm² = 10cm * 10cm

SInce 100cm = 1m

10cm = (10/100)m

10cm = 0.1m

100cm² = 0.1m * 0.1m = 0.01m²

Area (in m²) = 0.01m²

Required

Intensity of the sunlight I

I = P/A

I = 6.5/0.01

I = 650W/m²

Hence, the intensity of the sunlight in W/m² is 650W/m²

4 0
3 years ago
Calculate the kinetic energy of a 40 kg rock if the rock rolls down the hill with a velocity of 8 m/s.
ella [17]

Answer:

1280 J

Explanation:

see pic

7 0
3 years ago
PLEASE HELP I NEED THIS TO PASS THE EIGHTH GRADE AND I ONLY HAVE A COUPLE HOURS LEFT!!!!!!
zavuch27 [327]

Answer:

the pe at the top of the building: 784 J

the pe halfway through the fall: 392 J

the pe just before hitting the ground: 784 J

Explanation:

Pls brainliest me

I had this question before

7 0
3 years ago
Other questions:
  • 1 G force = ? Newtons
    7·1 answer
  • Which organism in the food chain is sometimes first level consumer and sometimes 2nd level
    15·1 answer
  • Is a reference point ever needed to calculate speed
    8·2 answers
  • 4. State in words how acceleration is calculated.
    10·1 answer
  • The apparent curving of the winds is called _______.
    12·2 answers
  • Which of the following is true of education in 1950
    12·1 answer
  • A pulley with a mechanical advantage of 5 will require you to pull _____ times the amount of rope.
    10·1 answer
  • What does snells law of refraction fail
    15·1 answer
  • What is an example of a light mediem wave.
    13·2 answers
  • A box has a momentum of 38.0 kg*m/s to the right. A 88.3 N force pushes it to the right for 0.338 s. What is the final momentum
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!