Answer:
Explanation:
a = (vf - vi) / t
a = (50 - 90) / 10.0
a = -4 km/h/s(1000 m/km / 3600 s/h)
a = - 1.11 m/s²
Answer:
B. q = 2.5 x 10^-1 C
Explanation:
Formula: E = F/q
Given information:
E = 40 N/C
F = 10N
--> q = F/E = 10/40 = 0.25 C
or q = 2.5 x 10^-1 C
100w bulb has a greater resistance according to p=vi and v=ir
Answer:
A derived unit is called so because it is the product of two more basic units. The basic unit of area is the cubic meter (m³) for volume. By derived unit, it refers to any given quantity which cannot be measured directly with any device. For eg., We can't measure density of a substance with a rule, or scale, or bucket.
Answer:
v=2.13 m/s
Explanation:
Given that
L= 3 ft
We know that
1 ft = 0.3048 m
L=0.91 m
a= g/2
F= m a
F= m g/2 = K L
k= (mg)/(2L)
Now from energy conservation
Kinetic energy of train = potential energy of the spring
k= (mg)/(2L)
By putting the values
( take g =10 m/s²)
v=2.13 m/s