It would take approximately 4.06 hours
Answer:
The speed is 1.5 m/s.
Explanation:
Given that,
Distance = 3 m
Time = 2 sec
We know that,
The position and time graph shows the speed of motion.
We need to calculate the speed
Using formula of speed
Where, d = distance
t = time
Put the value into the formula
Hence, The speed is 1.5 m/s.
Answer:
The magnitude of the acceleration of the car when 
is 
.
Explanation:
The acceleration can be obtained by using the following differential equation:
Where 
, 
and 
are the acceleration, speed and distance masured in meters per square second, meters per second and meters, respectively.
Given that 
, its first derivative is:
The following expression is obtained by replacing each term:
The magnitude of the acceleration of the car when is:
Answer:
a) diffraction
Explanation:
Diffraction occurs when waves pass through small openings, around obstacles or sharp edges.When an opaque object is between the point of light and a screen, the border between the shaded and illuminated regions on the screen is not defined. A careful inspection of the scrubber shows that a small amount of light is diverted to the shaded region. The region outside the shadow contains bright and dark altered bands, where the intensity of the first band is brighter than the region of uniform illumination.
Answer:
200 Watts.
Explanation:
Power is defines as the amount of work expended per unit time. Mathematically, it is expressed as Power = Workdone/Time
Given parameters
Energy used up 100Joules
Distance moved by brick = 1 meters
Time taken by the machine = 0.5 secs
Power can also be written as Energy/Time
Required
We need to calculate the amount of power used up.
Power = 100J/0.5s
Power = 100/(1/2)
Power = 100 * 2/1
Power = 200Watts.
This shows that the machine would expend 200Watts of power
