Answer:
250 cm³
Explanation:
given,
Length of the Box, L = 5 cm
Width of Box, W = 5 cm
height of the box, H = 10 cm
Volume of the Box = L W H
V = 5 x 5 x 10
V = 250 cm³
Volume of the box is equal to 250 cm³
The mass of material is 26.6 Kg
Given:
Q = 4720 KJ
Change in Temperature (AT) = 65 K
Specific heat capacity of material (c) = 2730 J K Kg*K
The relation between Q, AT, c and m are related by following formula: Q=m* c*∆T,
Plugging value in heat formula:
4720KJ = m* 2730 J/Kg*K * 65K
4720KJ = m * 177450J/kg
Converting 177450 J/kg to Kg/KJ
177450 J/kg*1KJ/1000J = 177.450KJ/kg
Dividing both side by 177.450KJ/kg
4720KJ/177.450KJ/Kg = m*177.450KJ/Kg÷ 177.450KJ/Kg
Hence, the mass of material = 26.6 Kg
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Answer:
The dependant variable is obvrioulsy going to be the temperature of the watch, and the independan variable is going to be the amount of water ebing poured into the cups.
Explanation:
The temperature is the dependant variable by how it is the thing being observed, or recorded. Your independant variables could be a few things from wha information I have but it could be either, the amount of water being poured into the cups, the temperature of the water being poured, or the amount of time between each new temperature of wather bing poured into the cups.
Answer: Potential Energy: PE = m x g x h Mass: m = PE / (g x h) Acceleration of Gravity: g = PE / (m x h) Height: h = PE / (m x g) Where, m = Mass, g = Acceleration of Gravity h = Height Gravitational Acceleration of the earth is 9.8 m/sec2.
Explanation:
At an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
Generally, acceleration is defined as the change in velocity per change in time of motion.
<em>Acceleration</em> of an object at any given time, t, can be calculated using the following equations below;
where;
- <em>v is final velocity at t₂</em>
- <em>u is the initial velocity at t₁</em>
- <em>t₂ is the final time of motion</em>
- <em>t₁ is the initial time of motion</em>
From the formula above, we can conclude that at an equal time interval, acceleration increases with increase in velocity and it will maintain a positive value. When this value is compared to -9.8 m/s² (<em>acceleration due to gravity</em>), the value obtained will be greater than the value of acceleration due to gravity.
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