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4 years ago

What is conduction? Please help. First answer will mark Brainliest

Physics

2 answers:

Kruka [31]4 years ago

7 0

Answer:

Conduction is the main method of thermal energy transfer in solids.

Hope this helps.....

ICE Princess25 [194]4 years ago

5 0

Answer:

conduction is the transfer of thermal energy through direct contact

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ASK YOUR TEACHER A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 51.5-gram mass is attach

Simora [160]

Answer:

0.114 kg or 114 g

Explanation:

From the diagram attaches,

Taking the moment about the fulcrum,

sum of clockwise moment = sum of anticlockwise moment.

Wd = W'd'

Where W = weight of the mass, W' = weight of the meter rule, d = distance of the mass from the fulcrum, d' = distance of the meter rule.

make W' the subject of the equation

W' = Wd/d'................ Equation 1

Given: W = mg = 0.0515(9.8) = 0.5047 N, d = (39.2-16) = 23.2 cm, d' = (49.7-39.2) = 10.5 cm

Substitute these values into equation 1

W' = 0.5047(23.2)/10.5

W' = 1.115 N.

But,

m' = W'/g

m' = 1.115/9.8

m' = 0.114 kg

m' = 114 g

6 0

3 years ago

An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pond in which he is swimming. I

andrew-mc [135]

Answer:

The archerfish must spit at a minimum speed of $3.43m/s$ at an angle of $69.14\°$ above the horizontal.

Explanation:

First of all, we need to find the angle above the horizontal at which the archerfish must spit, as we can see in the attachment this angle is $\Theta = 69.14\°$ .

Then we use the formula $h=\frac{v_{0}^{2}sin^{2} \Theta}{2g}$ , as we clear it for $v_{0}$ , we obtain, $v_{0}=\frac{\sqrt{2gh} }{sin\Theta}=\frac{\sqrt{2(9.8m/s^{2})(0.525m)} }{sin(69.14\°)}=3.43m/s$ , therefore the archerfish must spit at a minimum speed of $3.43m/s$ at an angle of $69.14\°$ above the horizontal.

7 0

3 years ago

Assuming the starting height is 0.0 m, calculate the potential energy of the cart after it has been elevated to a height of 0.5

Bogdan [553]

The potential energy is most often referred to as the "energy at rest" and is dependent on the elevation of an object. This can be calculated through the equation,

E = mgh

where E is the potential energy, m is the mass, g is the acceleration due to gravity, and h is the height. In this item, we are not given with the mass of the cart so we assume it to be m. The force is therefore,

E = m(9.8 m/s²)(0.5 m) = 4.9m

Hence, the potential energy is equal to 4.9m.

8 0

4 years ago

An open-end mercury manometer is connected to a low-pressure pipeline that supplies a gas to a laboratory. Because paint was spi

Svetllana [295]

Answer:

$P_G = 14.03 \ psig$