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3 years ago

In which situation is chemical energy being converted to another form of energy?

Physics

2 answers:

anygoal [31]3 years ago

8 0

<span>D. A burning candle. (chemical energy into energy of heat and light, i.e. thermal and wave)</span>

vladimir1956 [14]3 years ago

4 0

Answer: Option (D) is the correct answer.

Explanation:

When we burn a candle then combustion reaction takes place as it results in the formation of carbon dioxide gas and water in the form of vapors (stream).

Thus, we can conclude that when a candle is burnt then chemical energy gets converted to heat energy or light energy.

As due to this heat energy the wax starts to melt.

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The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional b

bagirrra123 [75]

To solve this problem it is necessary to address the concepts related to Torque as a function of the force and distance where it is applied and the moment of inertia from which the torque, moment of inertia and angular acceleration are related.

By definition the torque is defined as

$\tau = F*r$

Where,

$\tau = Torque$

F = Force

r = Radius

For our values we have:

$\tau = F*r$

$\tau = (1.75*10^3)(2.8*10^{-2})$

$\tau = 49Nm$

Consequently the calculation of the moment of inertia would then be given by the relationship

$\tau = I\alpha$

$I=\frac{\tau}{\alpha}$

Replacing with our values

$I = \frac{49}{150}$

$I = 0.322Kg.m^2$

The moment of inertia of the boxer's forearm $0.322Kg.m^2$

4 0

3 years ago

Tim has just jumped out of an airplane. The force of gravity pulls him downward, while air resistance pushes him upward.

Rudik [331]

Answer: 80 N downward

Explanation:

705 - 625 = 80 N downward

7 0

3 years ago

A high-intensity portable lantern is powered by several batteries that are connected in series. The lantern’s bulb uses 86 W of

maxonik [38]

Answer:

28.6666666667 or 29

Explanation:

the formula for voltage (if power is involved)

V = P/i

86 ÷ 3

28.6666666667

if you want your can round to get a more simple answer

5 0

4 years ago

The velocity of blood flow is the lowest in capillaries because

Varvara68 [4.7K]

Answer:

the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system.

Explanation:

Blood velocity is not the same in all areas. In the capillaries it is where there is less speed, while in arteries and veins it is quite similar. This is due to the cross-sectional area of each of the vessels. It is a mistake to think of a vein, artery or capillary individually. We have to put them all together to see that the total area of the capillaries is 100 times larger than that of the arteries or veins. Blood flowing through arteries or veins is going faster because there is less area.

Blood velocity is inversely proportional to each of the areas of its territories. The greater the area, the lower the speed.

6 0

3 years ago

Observe yourself breathing and count the number of times you inhale per second. During each breath you probably inhale 0.66 L of

Pavel [41]

To solve this exercise it is necessary to apply the concepts related to Robert Boyle's law where:

$PV=nRT$