Answer:
the same mass answer b) but i dont know first question
Answer:
Explanation:
work done by force exerted by canon = force x displacement
= 40 x 1.7 = 68 N
This energy would have been added to the potato .
Increase in potential energy of potato = mgh
= mg sin 35 x 1.7 = 2 x 9.8 x sin 35 x 1.7 = 19.11 J
Increase in kinetic energy = 68 - 19.11
= 48.89 J
Answer:
a
b
c
Explanation:
From the question we are told that
The mass of the bag is
The normal force experienced is
The maximum acceleration of the bag is
Generally this normal force experience by the bag is mathematically represented as
=>
=>
=>
=>
Generally for the bag not to slip , it means that the frictional force is equal to the sliding force
Hence is mathematically represented as
While is mathematically represented as
So
=>
=>
Generally from the workdone equation we have that
Here is the work done by friction which is mathematically represented as
Here s is the distance covered by the bag
is zero given that velocity at rest is zero
and
so
=>
substituting 2.55 m/s for v_i and 0.350 for \mu_k we have that
=>
Answer:
0.000314 Am²
6.049*10^-7 T
Explanation:
A
From the definitions of magnetic dipole moment, we can establish that
= , where
= the magnetic dipole moment in itself
= Current, 100 A
= Area, πr² (r = diameter divided by 2). Converting to m², we have 0.000001 m²
On solving, we have
= ,
= 100 * 3.14 * 0.000001
= 0.000314 Am²
B
=
(0)/4
* 2
/
³, where
(0) = constant of permeability = 1.256*10^-6
z = 4.7 cm = 0.047 m
B = 1.256*10^-6 / 4*3.142 * [2 * 0.000314/0.047³]
B = 1*10^-7 * 0.000628/1.038*10^-4
B = 1*10^-7 * 6.049
B = 6.049*10^-7 T