Answer:
that is like trying to learn your abc's at the age of 2 months old..........
Explanation:
:) just sayin
Answer:
Mg Cosθ
Explanation:
mass of block = M
Angle of inclination = θ
coefficient of friction = μk
The force of gravity acts of the block is Mg
there are two components of the weight
the component parallel to the inclined plane is Mg Sinθ
the component perpendicular to the plane of inclined is Mg Cosθ
So, the normal force exerted by the inclined is Mg Cosθ
Answer:
The current is 0.248 A
Explanation:
Given that,
Inductor 
Resistance 
Voltage = 15 volt
Time 
We need to calculate the current
Using formula of current
Where, V = voltage
R = resistance
L = inductance
T = time
Put the value into the formula
Hence, The current is 0.248 A.
Answer:
the total energy before collision is 12.25J
the total energy after collision is tranfered to sound and heat (by the friction between the two clay balls)
Explanation:
first we should know the velocity of the 2 balls:
momentum=mass ×velocity
we have the momentum and the mass of the 2
so momentum ÷mass=velocity
clay ball 1 velocity=7 m/s & clay ball 2 velocity= -7 m/s
KE=1/2 mv²
1/2 ×0.25×7²=6.125J KE of ball 1
1/2 ×0.25×-7²=6.125J KE of ball 2
add them both we will have 12.25J which is before collision
this energy will then be tranfered to heat and sound as they stop after the collision(velocity =0m/s)
