Answer:
a) 24.918 m
b) 4.5078 seconds
c) [0.18, 0.39]
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²
At the beginning of the last 1 second the velocity will be 15.095 m/s
Taking that as the final velocity of the path from the maximum height we find time
So, the ball traveled for 1+1.539 = 2.2539 seconds from the maximum height to the ground.
The maximum height the ball traveled is 24.918 m.
The time the ball will take to go up is 2.2539 seconds
So, total time the ball will be in flight is 2.2539+2.2539 = 4.5078 seconds
Solving the above equation we get
t = 0.18 seconds
Solving the equation we get
t = 0.39 seconds
So, the ball will traveling in the [0.18, 0.39] seconds of the flight
The amount of heat needed is 338 J
Explanation:
When a substance is at its melting point, the amount of heat required in order to completely melt the substance is given by the equation:
where:
m is the mass of the substance
is the specific latent heat of fusion of the substance
In this problem, we have:
m = 5.24 g is the mass of gold
is the specific latent heat of gold
The sample of gold is already at its melting point, , therefore the amount of heat needed to melt it is:
Learn more about specific heat:
brainly.com/question/3032746
brainly.com/question/4759369
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Answer:
The mass of the rock is
Explanation:
From the question we are told that
The length of the string is
The angular velocity is
The tension on the string is
Generally the centripetal force acting on the rock is mathematically evaluated as
making m the subject of the formula
substituting values
Answer: False
Explanation: Cuz its False, and its false, this message was approved by False.