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irakobra [83]
3 years ago
15

Please help!! Will give Brainliest and 35 points!!

Physics
1 answer:
Olegator [25]3 years ago
5 0
N is the boiling point of soybean oil for 1 kg
and m is the boiling point of water for 2 kg
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On a topographic map, contour lines create a group of concentric, closed loops. Which of the following features could this indic
posledela

Answer:

b. Hill top

Explanation:

On a topographic map, the closed circles are meant to represent a hill. So if the contour lines are creating a group of concentric closed loops then it must be an indication of a hill.

3 0
3 years ago
Calculate the kinetic energy in joules of a 1500 kg automobile moving at 19 m/s
Svetlanka [38]
Using
KE = ½mv² = ½×1500×19×19 = 270750 joules
5 0
3 years ago
What does malleablity means
daser333 [38]

Able to be hammered or pressed permanently out of shape without breaking or cracking.

3 0
3 years ago
Use the work-energy theorem to determine the force required to stop a 1000 kg car moving at a speed of 20.0 m/s if there is a di
Vlad1618 [11]

Answer:

4.44 kN in the opposite direction of acceleration.

Explanation:

Given that, the initial speed of the car is, u=20m/s

And the mass of the car is, m=1000 kg

The total distance covered by the car before stop, s=45m

And the final speed of the car is, u=0m/s

Now initial kinetic energy is,

KE_{i}=\frac{1}{2}mu^{2}

Substitute the value of u and m in the above equation, we get

KE_{i}=\frac{1}{2}(1000kg)\times (20)^{2}\\KE_{i}=20000J

Now final kinetic energy is,

KE_{f}=\frac{1}{2}mv^{2}

Substitute the value of v and m in the above equation, we get

KE_{f}=\frac{1}{2}(1000kg)\times (0)^{2}\\KE_{i}=0J

Now applying work energy theorem.

Work done= change in kinetic energy

Therefore,

F.S=KE_{f}-KE_{i}\\F\times 45=(0-200000)J\\F=\frac{-200000J}{45}\\ F=-4444.44N\\F=-4.44kN

Here, the force is negative because the force and acceleration in the opposite direction.

6 0
2 years ago
If you double the period of a pendulum. what happens to its length?​
victus00 [196]

Answer:

Time period is directly proportional to the length so if the length is doubled the time period is doubled

hope it is helpful....

5 0
3 years ago
Read 2 more answers
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