115 divided by 2 equals 57.5
Answer:
(a) 1.11sec
(b) 14.37m/s
(c) 31.78m
Explanation:
U = 18m/s, A = 37°, g = 9.8m/s^2
(a) t = UsinA/g = 18sin37°/9.8 = 18×0.6018/9.8 = 1.11sec
(b) Ux = UcosA = 18cos37° = 18×0.7986 = 14.37m/s
(c) R = U^2sin2A/g = 18^2sin2(37°)/9.8 = 324sin74°/9.8 = 324×0.9613/9.8 = 31.78m
Answer:
<h3>The answer is 0.33 mL</h3>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass = 5 g
density = 15 g/ml
We have
We have the final answer as
<h3>0.33 mL</h3>
Hope this helps you
Answer:
Explanation:
According to the Stefan-Boltzmann law for real radiating bodies:
(1)
Where:
is the energy radiated (in Watts)
is the Stefan-Boltzmann's constant.
is the Surface area of the body
is the effective temperature of the body (its surface absolute temperature) in Kelvin
is the body's emissivity
On the other hand, we are told the human body is roughly approximated to a cylinder of length and circumference .
The circumference of a circle is: where is the radius. Hence .
Now we have to input this value for in the Area of a cylinder formula:
(2)
Substituting (2) in (1):
(3)
Finally:
Force due to gravity = 4080 x 9.81 = 40,025 N
Force of trailer parallel to slope = 40025 sin 14.5 = 10021 N (resolve horizontally)
<span>I used the acceleration of gravity as 9.81 m/s. If they want you to use 10 m/s, just switch it with the 9.81 in the first equation. Ignore the speed of the trailer. That is just to throw you off.</span>