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USPshnik [31]
3 years ago
15

State joole's law ofheating and verifyexperimentally​

Physics
1 answer:
diamong [38]3 years ago
6 0

Answer:

Joule's law is verified using Joule's calorimeter. .

Explanation:

Two thirds of the volume of the calorimeter is filled with water. The calorimeter is enclosed in a wooden box to minimise loss of heat. A battery (Bt), a key (K), a rheostat (Rh) and an ammeter (A) are connected in series with the calorimeter

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1 pts
Nuetrik [128]

Answer:

The leaf cells would be unable to convert the sun's energy to make food.

Explanation:

The chloroplast in the leaf are used to make food for the plant. If the leaf loses its chloroplast, the leaf with not be able to use solar energy to manufacture their food.

  • During photosynthesis, green plants manufacture their food.
  • They use sunlight to cause a reaction between carbon dioxide and water.
  • The sunlight is trapped using chlorophyll present in the leaf.
  • In the absence of the chlorophyll contained in the chloroplast, no solar energy would be generated to cause the reaction to take place.
4 0
3 years ago
A ship leaves a port at noon and travels due west at 20 knots. At 6 PM, a second ship leaves the same port and travels northwest
Amanda [17]

Answer:

v = 12.44 Knots

Explanation:

First ship starts at Noon with speed 20 Knots towards West

now we know that 2nd ship starts at 6 PM with speed 15 Knots towards North West

so after time "t" of 2nd ship motion the two ships positions are given as

r_1 = 20(t + 6)\hat i

r_2 = 15(t)(cos45\hat i + sin45\hat j)

now we can find the distance between two ships as

x = \sqrt{(20(t + 6) - 10.6 t)^2 + (10.6t)^2}

now we have

x^2 = (120 + 9.4 t)^2 + (10.6 t)^2

x^2 = 200.72 t^2 + 14400 + 2256 t

now we will differentiate it with respect to time

2x\frac{dx}{dt} = 401.44 t + 2256

here we know that

t = \frac{90}{15} = 6 hours

so we have

x = 187.5

now we have

2(187.5) v = 401.44(6) + 2256

v = 12.44 Knots

5 0
3 years ago
Why are the types of shoes you wear in the kitchen important? What are the possible consequences of wearing inappropriate footwe
Nonamiya [84]

Why are the types of shoes you wear in the kitchen important?

• One of the best ways to prevent slip and fall accidents at work is to wear the right type of shoes. Footwear is paramount when it comes to safety in a kitchen setting. Grease spilled liquids, and vegetable debris can litter a chef's floor at any time, presenting major slip and fall hazards.

What are the possible consequences of wearing inappropriate footwear in the kitchen?

• Non-slip shoes greatly reduce the risk of accidents in the kitchen. Slips and falls can result in bruises, bleeding, broken bones, and concussions. If someone falls in the wrong place, he or she could receive serious burns or knife wounds.

5 0
3 years ago
Can someone buy me<br> it will make my day
Bond [772]

Answer:

how much?

Explanation:

8 0
2 years ago
Read 2 more answers
If you were traveling 60 mph and not wearing a seatbelt and collided with a fixed object, how fast would you be traveling when y
Readme [11.4K]

Your speed when your car hits a fixed object is 60 mph.

The given parameters:

  • Your initial speed, v = 60 mph

<h3>What is relative velocity?</h3>

Relative velocity tells us how fast we are traveling from a fixed point or reference point.

  • When travel at 60 mph in a car, you are moving at the same rate with the car.
  • If you are not wearing a seat belt, when you hit a fixed object, you will move forward at the same rate as the car's speed.

Thus, we can conclude that your speed when your car hits a fixed object is 60 mph.

Learn more about relative velocity here: brainly.com/question/17228388

5 0
3 years ago
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