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:
17m/s
Step by step explanation:
Using g= 10m/s²
Maximum H = (u²sin²theta) /2g
12 = u² sin²(45)/2(10)
12 = u²(0.72)/20
0.72 u²= 240
u² = 240/0.72 = 333.33
Initial velocity = 18.3m/s
Answer:
B
Explanation:
the reason the small turtle has more momentum is because it was less an example is I have two rocks a rock that weighs 1 oz and another rock that weighs half a pound the one that is half a pound Falls faster in the one that weighs an ounce Falls last hopefully that makes sense
Answer:
11.8 Joules
Explanation:
Given:-
- The height of the target ball, si = 0.860 m
- The mass of target and steel ball, m = 0.012 kg
- The target ball travels a distance ( x ) after being struck = 1.40 m
Find:-
What is the kinetic energy (in joules) of the target ball just after it is struck?
Solution:-
- We are given the initial distance of the target ball as 0.86 m above the floor which travels a distance ( x ) after being struck.
- We will employ the one dimensional kinematic equation of motion to determine the initial velocity ( vi ) of the target ball as follows:
Where,
vf: The final velocity of target ball at maximum height = 0
g: The gravitational acceleration constant = 9.8 m/s^2
- Plug in the required parameters and evaluate the ( vi ) as follows:
- The kinetic energy ( Ek ) of an object with mass ( m ) and initial velocity ( vi ) is expressed as:
Answer: The kinetic energy of the target ball just after it is struck is 11.8 Joules.
Answer:
The short answer is that velocity is the speed with a direction, while speed does not have a direction.
Explanation:
Speed is how fast an object is moving. It is calculated by the displacement of space per a unit of time. Velocity is the rate at which an object changes position in a certain direction. It is calculated by the displacement of space per a unit of time in a certain direction. Velocity deals with direction, while speed does not.