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madam [21]
4 years ago
13

James Prescott Joule demonstrated that work could generate heat using his churn. In order to truly demonstrate that energy is co

nserved, the next logical step would have been to convert that heat entirely back to work. why was this not done?
Physics
1 answer:
IceJOKER [234]4 years ago
6 0

Answer:

Heat can be converted into work as that is the principle on which steam turbines work and generate electricity. But in order to achieve the result we need to modify the apparatus in such a way that heat is extracted from the fluid whose temperature increases due to churning. This requires a modified setup which is different from the one used by Joule. The relationship that work can be converted into heat and vice versa both requires different apparatus to be accomplished as a machine can act as either as one that does work or one on which work can be done.

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What do hurricanes, tornadoes, and thunderstorms have in common?
amm1812

Answer:

low pressure systems

Explanation:

with a low pressure system over the area the storm can't form

8 0
3 years ago
What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?
svetoff [14.1K]

Average speed = (total distance covered) / (time to cover the distance)

-- Traveling at 40 mph for 1 hour, the distance covered is 40 miles.

-- Traveling at 60 mph for 1 hour, the distance covered is 60 miles.

-- Total distance covered = (40 miles) + (60 miles) = 100 miles

-- Total time = (1 hour) + (1 hour)  =  2 hours

-- Average speed = (100 miles) / (2 hours)

<em>Average speed = 50 miles per hour</em>

6 0
4 years ago
The acceleration of gravity on the moon is about 1.6 m/sec 2. An experiment to test gravity compares the time it takes objects t
Valentin [98]
The answer is <span>b. 6.1 times as long
</span>
Step 1: Calculate the time <span>it takes objects to reach a speed on the Moon.
</span>Step 2: Calculate the time it takes objects to reach a speed on the Earth.
Step 3. Divide the time on the Moon by the time on the Earth.

Use the formula: v2 = v1 + at
v2 - the final velocity
v1 - the initial velocity
a - gravitational acceleration
t - time

Step 1.
Moon:
<span>v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 1.6 m/s</span>²
t = ?
______
v2 = v1 + at
10 = 0 + 1.6t
10 = 1.6t
t = 10/1.6
t = 6.25 s


Step 2.
Earth:
v1 = 0 (because it is free fall)
v2 = 10 m/s
a = 9.81 m/s²
t = ?
______
v2 = v1 + at
10 = 0 + 9.81t
10 = 9.81t
t = 10/9.81
t = 1.02 s


Step 3:
6.25 s / 1.02 s = 6.1 s
7 0
3 years ago
A 700 g can of beans is dropped from a shelf that is 1.5 m high. What is the gravitational potential energy of this can? Round y
OLga [1]
<span>To find the gravitational potential energy of an object, we can use this equation: GPE = mgh m is the mass of the object in kg g = 9.80 m/s^2 h is the height of the object in meters GPE = mgh GPE = (0.700 kg) (9.80 m/s^2) (1.5 m) GPE = 10.3 J The gravitational potential energy of this can is 10.3 J</span>
4 0
3 years ago
Read 2 more answers
A crane raises a crate with a mass of 150 kg to a height of 20 m. Given that
MA_775_DIABLO [31]

Answer:

P.E=29400J

Explanation:

m=150Kg  h=20m g=9.8ms⁻²

P.E=mgh

P.E=150×9.8×20

P.E=29400J

3 0
3 years ago
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