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
mixas84 [53]
3 years ago
5

Is

Physics
1 answer:
ivann1987 [24]3 years ago
4 0

Answer:

Required energy Q = 231 J

Explanation:

Given:

Specific heat of copper C = 0.385 J/g°C

Mass m = 20 g

ΔT = (50 - 20)°C = 30 °C

Find:

Required energy

Computation:

Q = mCΔT

Q = 20(0.385)(30)

Required energy Q = 231 J

You might be interested in
Which property must be the same in order to stop the transfer of energy between two objects?
juin [17]
Its is temperture 
hope this helps :)
7 0
3 years ago
A dog runs down his driveway with an initial speed of 5 m/s for 8 s, and then uniformly increases his speed to 10 m/s in 5 s.
MakcuM [25]
Acceleration is given by change in velocity divided by change in time, so his acceleration should just be (10-5)/5 which is [tex] \frac{5}{2} \frac{m}{s^{2}} [tex]

The driveway is 40 meters plus 225/4. You can do the math.
8 0
4 years ago
State True or False:If the positive x-axis points to the right and the x-component of velocity is negative, the cart must be mov
umka2103 [35]

Answer:

True

Explanation:

Velocity is a vector, therefore it consists of two elements:

- A magnitude (also called speed), which is the ratio between the displacement of the object and the time taken

- A direction, which corresponds to the direction of motion of the object

Therefore, velocity can be describes as positive or negative, depending on the direction which has been chosen as positive. If we chose the positive x-axis as positive direction, therefore:

- if the object is moving to the right (positive x-direction), the velocity will be positive

- if the object is moving to the left (negative x-direction), the velocity will be negative

So, in this case, since the velocity of the cart is negative, it must be moving to the left.

7 0
3 years ago
Which amount of power is the smallest?
Zinaida [17]
<span>D is the correct answer. A watt is the smallest amount of power. The prefix kilo means a thousand, mega means a million and giga means a billion, so, in increasing size: watt - kilowatt - megawatt - gigawatt.</span>
3 0
3 years ago
Read 2 more answers
What does this meannn plsssssss
VARVARA [1.3K]

Answer:

the answer is B

Hope this helps!

Have a nice day :)

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • A rolling ball will eventually stop rolling. Which describes one reason why this happens? The ball eventually loses its energy.
    11·1 answer
  • A pulley system has an MA of 4. How much force would be necessary to pull a 200 newton box
    9·1 answer
  • A jet is travelling at a speed of 1200 km/h and drops cargo from a height of 2.5 km above the ground Calculate the time it takes
    13·1 answer
  • A tornado warning means that the current weather conditions could produce a tornado. True or False
    13·2 answers
  • A race car starts from rest on a circular track. The car increases its speed at a constant rate at as it goes 4.25 times around
    5·1 answer
  • Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 × 108 m. Find th
    8·1 answer
  • Explain how to calculate step by step
    6·1 answer
  • I need help
    10·1 answer
  • Is the largest group into which organisms are classified
    12·2 answers
  • Qual a capacidade térmica de um objeto que, ao receber 10000 cal de energia, tem sua temperatura elevada de 25°C para 75°C?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!