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Marina86 [1]
3 years ago
6

What is a Lever?

Physics
2 answers:
NemiM [27]3 years ago
8 0
Lever: a bar used to move something
Wedge: a tool used to go in between object to put them in place
Incline plane : a ramp it’s used to help rise heavy things
Pulley: it’s a wheel that supports movement and change of direction
Mariulka [41]3 years ago
4 0

Answer:lever

Explanation:

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State two uses of high specific heat of water​
Nitella [24]
  • It helps in regulating extremes in the environment.
  • It can be used as a car radiators.

<u>Explanation:</u>

  • The amount of heat needed to raise a certain amount of temperature to the water is known as the specific heat of the water. For one gram of water to increase 1 degree celsius, water needs to absorb 4.184 J of heat.

Some of the uses of high specific heat of water are as follows,

  • The temperature of the water will remain the same from day to night in ponds or sea. During day time, the hot air from the sea or pond rises while the cool air from the sea moves to take its place. During the night, the hot air from the land moves to take its place, giving rise to a land breeze and thus maintaining the environment.
  • Another example, When water is circulated throughout an engine, heat will get absorbed. This water is pumped to a radiator and then disposed to the surrounding air.

7 0
4 years ago
Which of the followings are true about Vmax? A. The higher the [enzyme], the higher the Vmax B. Vmax is proportional to k2 C. Vm
Vera_Pavlovna [14]

Answer:

Correct answer is A.

The higher the enzyme, the higher the Vmax

Explanation:

Although, in the absence of enzyme, the rate of a reaction(Vmax) increase linearly with substrate concentration. The reaction rate is given as dp/dt.

The rate of a reaction involving enzyme also increases.

At low enzyme concentrations or high substrate concentrations, all of the available enzyme active sites could be occupied with substrates. Therefore, increasing the substrate concentration further will not change the rate of diffusion. In other words, there is some maximum reaction rate (Vmax) when all enzyme active sites are occupied. The reaction rate will increase with increasing substrate concentration, but must asymptotically approach the saturation rate, Vmax. Vmax is directly proportional to the total enzyme concentration, E

5 0
3 years ago
Need examples of a science fair project, this project need to require some sort of data (any type of science)
Natasha_Volkova [10]
Put vinegar in a water bottle with no water, fill a balloon with baking soda, without pouring the baking soda in the vinegar put the balloon on the water bottle, then lift it so the baking soda goes in the vinegar, this will blow up the balloon
4 0
3 years ago
What happens when a particle of matter meets its corresponding antiparticle of antimatter?
shutvik [7]

Answer:

The combined mass of the two particles is completely transformed into energy (photons). This process is called matter-antimatter annihilation.

Explanation:

6 0
3 years ago
An office worker uses an immersion heater to warm 237 g of water in a light, covered, insulated cup from 20°C to 100°C in 6.00 m
Serhud [2]

Answer:

(a) 220.46 Watt

Explanation:

m = 237 g

T1 = 20 degree C, T2 = 100 degree c , t = 6 minutes = 6 x 60 = 360 seconds

V = 120 V, c = 4186 J/kg C

(a)

Heat required to raise the temperature = m x c x (T2 - T1)

H = 0.237 x 4186 x (100 - 20)

H = 79366.56 Joule

Power = Heat / time = 79366.56 / 360 = 220.46 Watt

6 0
3 years ago
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