Answer:
B. 4700 J
Explanation:
Given the following data;
Mechanical energy = 4900J
Mass = 100kg
Velocity = 2m/s
To find the potential energy;
Mechanical energy = kinetic energy + potential energy
First of all, we would determine the kinetic energy of the object;
K.E = ½mv²
K.E = ½*100*2²
K.E = 50*4
K.E = 200 J
Substituting into the equation, we have;
4900 = 200 + P.E
P.E = 4900 - 200
P.E = 4700 Joules
Answer:
.b.Be faster, less power consuming than silicon and much thinner
Explanation:
Graphene has a <em>very high electrical conductivity</em> due to its pi orbitals overlap that enhance the carbon to carbon bonds. This means that a nanoelectronic devise that uses graphene will be faster and will consume less powe and it will be thinner because graphenes have a <em>size of 0.345Nm.</em>
I hope you find this information useful and interesting! Good luck!
Answer:
32 meters
Explanation:
Given:
x₀ = 0 m
y₀ = 1 m
y = 1 m
v₀ₓ = 18 cos 52° m/s
v₀ᵧ = 18 sin 52° m/s
aₓ = 0 m/s²
aᵧ = -9.8 m/s²
Find: x
First, find the time it takes for the ball to be caught.
y = y₀ + v₀ᵧ t + ½ aᵧt²
1 = 1 + 18 sin 52° t + ½ (-9.8) t²
0 = 14.2 t − 4.9 t²
0 = t (14.2 − 4.9 t)
t = 0 or 2.89
It takes 2.89 seconds to be caught. The horizontal distance traveled in that time is:
x = x₀ + v₀ₓ t + ½ aₓt²
x = 0 + (18 cos 52°) (2.89) + ½ (0) (2.89)²
x = 32.1
Rounded to two significant figures, the ball travels 32 meters.
This is an example of kinetic to potential because the water is moving, pushing a turbine (Kinetic) and the turbine converts the energy to potential energy.
