Answer:
Explanation:
As we know that there is no friction in the bowl so total mechanical energy is conserved here
So we can say that
initial potential energy of the butter = final kinetic energy at the bottom
so we can say
here we can solve it for speed v
now plug in all values in it
Time = distance/speed, as you surely know. About the scientific notation, you just need to express the result as a number with one digit and the rest in decimal places with 10^... I can't see the exponents in your question and it's late here. Good luck! For instance, 6.434*10^3 ... I recall it takes about 5 hours, so you should get there, so about 5 * 3600 = 18000 seconds. Nice!
Answer:
The kinetic energy of the particle will be 12U₀
Explanation:
Given that,
A particle is launched from point B with an initial velocity and reaches point A having gained U₀ joules of kinetic energy.
Constant force = 12F
According to question,
The kinetic energy is
....(I)
Constant force = 12F
A resistive force field is now set up ,
Resistive force is given by,
When the particle moves from point B to point A then,
We need to calculate the kinetic energy
Using formula for kinetic energy
Put the value of
Now, from equation (I)
Hence, The kinetic energy of the particle will be 12U₀.
Answer:
current is 4.23 A
Explanation:
Given data
force f1 = 0.030 N
current I = 2.7 A
force f2 = 0.047 N
to find out
the new current
solution
we know that force = flux density(B) × current(I) × length(L) ...............1
f1 = BL × current
so BL = 0.030/ 2.7 = 0.011111
now put BL and f2 in equation 2 we get current
force = flux density(B) × current(I) × length(L)
0.047 = 0.01111 × current
current = 0.047 / 0.01111
current is 4.23 A