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Vsevolod [243]
3 years ago
14

When you start the simulation, there is no friction and no air resistance ("Air Drag"). Apply full force to the right, 200N. Wil

l the sled ever reach a maximum speed?
Physics
1 answer:
kakasveta [241]3 years ago
3 0

Answer:Like friction, the drag force always opposes the motion of an object. ... The drag coefficient can depend upon velocity, but we will assume that it is a ... At highway speeds, over 50% of the power of a car is used to overcome air drag. ... A zero net force means that there is no acceleration, as given by Newton's second law.

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A bag is dropped from a hovering helicopter. After 42.4s, calculate the bag’s displacement.
Ann [662]

Answer:

8,809.024m

Explanation:

Displacement , y = (gt^2/2 )

g = 9.8 m/s^2

t = 42.4s

y = (9.8 (42.4*42.4)) / 2

y = 8,809.024m

3 0
3 years ago
A fan is to accelerate quiescent air to a velocity of 8 m/s at a rate of 9 m3 /s. determine the minimum power that must be suppl
ELEN [110]
Given:
ρ = 1.18 kg/m³, density of air
v = 8 m/s, flow velocity
Q = 9 m³/s, volumetric flow rate

The minimum power required (at 100% efficiency) is
\frac{1}{2} (8 \,  \frac{m}{s} )^{2}*(9 \,  \frac{m^{3}}{s} )*(1.18 \,  \frac{kg}{m^{3}}) =  339.84 \, W

The actual power will be higher because 100% efficiency is not possible.

Answer: 339.8 W (nearest tenth)
8 0
4 years ago
What is the speed of electromagnetic radiation in free speed
Firlakuza [10]
That's 299,792,458 meters per second.
6 0
4 years ago
Read 2 more answers
What is the period of a simple pendulum is its frequency is 20 Hz?
JulijaS [17]

Period  =  (1) / (frequency)

             =  (1) / (20/sec)

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5 0
4 years ago
The instantaneous expression for the magnetic field intensity of a uniform plane wave propagating in the +y direction in air is
Alexxx [7]

Answer:

Explanation:

check attachment below for explicit explanation and answer.

3 0
3 years ago
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