Two thermometers are calibrated, one in degrees Celsius and the other in degrees Fahrenheit.
1 answer:
Answer:
The temperature is 233.15 K
Explanation:
Recall the formula to convert degree Celsius (C) into Fahrenheit (F):
So if we want the value of degree C to be the same as the value of the degree F, we want the following: C = F
which replacing F with C on the right hand side of the equation above, allows us to solve for C:
This means that -40°C = -40°F
And this temperature in Kelvin is:
-40°C + 273.15 = 233.15 K
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Answer:
The graphs are attached
Explanation:
We are told that he starts with a constant speed of 25 m/s for a distance of 100 m.
At constant velocity, v = distance/time
time(t) = distance(d)/velocity(v)
t1 = 100/25
t1 = 4 s
Now, we are told that he applies his brakes and accelerates uniformly to a stop just as he reaches a wall 50m away.
It means, he decelerate and final velocity is zero.
Thus;
v² = u² + 2as
0² = 25² + 2a(50)
25² = - 100a
625 = - 100a
a = - 625/100
a = - 6.25 m/s²
v = u + at
0 = 25 + (-6.25t)
25 = 6.25t
t = 25/6.25
t = 4 s
With the values gotten, kindly find attached the distance-time and velocity-time graphs.
Answer
given,
mass of book = 0.305 Kg
so, from the diagram attached below
computing horizontal component
θ = 62.35°