Before solving you must convert miles per hour to meters per second
146.95 J
Answer:
The motorcycle travelled 69.73 m during these 3.1 s.
Explanation:
In order to calculate the distance that the motorcycle travelled we first need to obtain the acceleration rate that was used to brake the vehicle. We do that by using the following formula:
a = (V_final - V_initial)/(t) = (15 - 30)/(3.1) = -4.84 m/s^2
The distance is given by the following formula:
S = (V_final^2 - V_initial^2)/(2*a)
S = (15^2 - 30^2)/[2*(-4.84)] = (225 - 900)/(-9.68) = -675/(-9.68) = 69.73 m
The motorcycle travelled 69.73 m during these 3.1 s.
Answer: a hydraulic machine has water or air controlled by pistons that are airtight, water does great forces and air when compressed or squeezed to make things move, take a CAT machine for example (if you live in america, its those big yellow trebuchets or cranes) they use a piston for the arm and in front of those pistons you have mainly water (if your using a CAT machine) and those pistons push the water to and from your machines arm to create movement.
as you can see, in this picture, the CAT has hydraulics running against the arms of the machine
Answer:
The thermal conductivity
Explanation:
From the question we are told that
The depth of the thermocouple from the surface is x = 10 mm = 0.01 m
The temperature is
The initial temperature is
The temperature of the thermocouple after t = 2 minutes( 2 * 60 = 120 \ seconds) is
The density of the material is
The specific heat of the solid
Generally the equation for semi -infinite medium is mathematically as
Here is a constant with unit
this is from the Gaussian function table
=>
=>
Generally the thermal conductivity is mathematically represented as