Answer:

Explanation:
given,
dia of wheel = 66 cm
radius = 33 cm = 0.33 m
mass of wheel = 1.90 Kg
speed of wheel = 230 rpm
time to hold the tire = 3.10 s
Normal force = 2.7 N
coefficient of friction = 0.46
final angular speed = ?
we know
F = μ N
F = 0.46 x 2.7 = 1.242 N
torque
τ = F r
τ = 1.242 x 0.33 = 0.409 Nm
moment of inertia for wheel
I = MR²
I = 1.90 x 0.33²
I = 0.2069 kg m²
we now,
τ = I x α
α = 1.981 rad/s²
we know,




Answer:
6 and 8
Explanation:
The different positions of the moon, as seen from Earth, reflect how much light is being reflected off the moon from the sun.
Position 1 indicates the 3rd Quarter.
Position 2 indicates the Waning Gibbous.
Position 3 indicates the Full Moon.
Position 4 indicates the Waxing Gibbous.
Position 5 indicates the 1st Quarter.
Position 6 indicates the Waxing Crescent.
Position 7 indicates the New Moon.
Position 8 indicates the Waning Crescent.
You would read the diagram counterclockwise, with positions 7 to 3 as the moon increases light and positions 3 to 7 as the moon decreases light.
Therefore, we see that our 2 choices where we have a crescent is positions 6 and 8.
Answer:
5. Solenoid B’s magnetic field is 2.7 times greater than solenoid A's magnetic field.
Explanation:
The magnetic field produced by a solenoid depends on number of coils, the length of the solenoid and the amount of current flowing through the coil.

Current in solenoid B is 2 times greater than the current in solenoid A.

Number of coils in B is 4 times greater than coils in A

Length of the solenoid B is 3 times greater than solenoid A


Thus, solenoid B's magnetic field is 2.7 times greater than magnetic field of solenoid A.
Answer:
Explanation:
Radius = 9.5 x 10⁻² m
area of circle = 3.14 x (9.5 x 10⁻² )²
A = 283.38 x 10⁻⁴ m²
magnetic moment = area x current
M = 283.38 x 10⁻⁴ x 5
= 1416.9 x 10⁻⁴ Am²
Torque = MBsinθ
M is magnetic moment , B is magnetic field .
Max torque = 1416.9 x 10⁻⁴ x 3.4 x 10⁻³ , for θ = 90
= 4817.46 x 10⁻⁷
= 481.7 x 10⁻⁶
= 481.7 μ J
Energy = - MBcosθ
Max energy when θ = 180
MB = 4817.46 x 10⁻⁷ J
Min energy = - 4817.46 x 10⁻⁷ for θ = 0
Answer:
The answer is below
Explanation:
The equation for a linear line graph is given by:
y = mx + b, where y and x are variables, m is the slope of the graph and b is the y intercept (that is value of y when x is zero).
The slope (m) of a line passing through two points
is given by:

A) The first line passes through the point (0, 0) and (10, 60). It is represented as (time, velocity). Hence the slope is:

B) The second line passes through the point (10, 60) and (15, 60). Hence the slope is:

C) The third line passes through the point (15, 60) and (40, -40). Hence the slope is:

D) The third line passes through the point (40, -40) and (55, 0). Hence the slope is:
