Answer:
The answer to your question is
a) t = 2.55 s
b) t = 5.5 s
Explanation:
Data
vo = 25 m/s
h = 2 m
g = 9.81 m/s
Formula
t = -(vo)/g
a)
t = -(25)/9.81
t = 2.55 s
b)
Tt = 2t
Tt = 2(2.55)
Tt = 5.1 s
Time in the last 10 m
10 = 25t + (1/2)(9.81)t²
Simplify
10 = 25t 4.91t²
4.9t² + 25t - 10 = 0
Solve the equation using an online calculator
t₁ = 0.37 s t₂ = -5.47 s
The correct answer is t₁, t₂ is incorrect because there are no negative answers.
Total time = 5.1 + 0.37
= 5.5 s
it will remain the same. only voltage will be changed
Answer:
(a). The acceleration due to gravity at the surface of Titania is 0.37 m/s².
(b). The average density of Titania is 1656.47 kg/m³
Explanation:
Given that,
Radius of Titania
Mass of Titania
We need to calculate the acceleration due to gravity at the surface of Titania
Using formula of the acceleration due to gravity on earth
The acceleration due to gravity on Titania
Put the value into the formula
The acceleration due to gravity at the surface of Titania is 0.37 m/s².
(b). We assume Titania is a sphere
The average density of the earth is 5500 kg/m³.
We need to calculate the average density of Titania
Using formula of density
The average density of Titania is 1656.47 kg/m³
Hence, (a). The acceleration due to gravity at the surface of Titania is 0.37 m/s².
(b). The average density of Titania is 1656.47 kg/m³
Answer: Conduction- Touch transfer heat and Earth warms air
Convection- liquid/gas transfers heat and warm air rises
Radiation- Sun heats Earth and Waves transfer heat
Explanation:
If the boy started at rest then its speed would be equal to 4.5 m/s squared.