Answer:
Explanation:
(a)
From the given information:
The initial velocity 
= 5 m/s
The direction of the angle θ = 30°
Therefore, the component along the x-axis = 
The component along the y-axis = 
To find the final velocity( reflected velocity)
using the same magnitude 
The angle from the x-axis can be 
= 150°
Thus, the component along the x-axis = 
The component along the y-axis = 
(b)
The velocity can be written as in vector form.
---- (1)
The reflected velocity in vector form can be computed as:
--- (2)
The change in velocity = 
(c)
The magnitude of change in velocity = 
= 8.66 m/s
Let's use the given equation, F = ma, to find out the force of each of the objects given.
A) F = 5 x 10 = 50 N
B) F = 5 x 20 = 100 N
C) F = 20 x 4 = 80 N
D) F = 20 x 3 = 60 N
The object with the greatest force is object B, with a force of 100 N.
Hope this helps! :)
Acceleration= change in velocity/time=27.8-0/4.8=5.792 ms⁻²
Force= Mass*acceleration=66*5.792=382.25 N
Answer:
Explanation:
By definition 
, so we can calculate the total charge that went through the filament since we know the electric current and the time. If the charge of one electron is e, then the total charge will be given by Q=Ne. Combining these equations we get the number of electrons as:
Since the resistivity of tungsten (W) is 
, then resistance can be calculated using the formula:
Where we already obtained the radius from the diameter. Finally the Voltage will be given by the formula:
