Answer:
91.5 m/s
Explanation:
m = mass of clay = 12 g = 0.012 kg
M = mass of wooden block = 100 g = 0.1 kg
d = distance traveled by the combination before coming to rest = 7.5 m
μ = Coefficient of friction = 0.65
V = speed of the combination of clay and lock just after collision
V' = final speed of the combination after coming to rest = 0 m/s
acceleration caused due to friction is given as
a = - μ g
a = - (0.65) (9.8)
a = - 6.37 m/s²
Using the kinematics equation
V'² = V² + 2 a d
0² = V² + 2(- 6.37) (7.5)
V = 9.8 m/s²
v = speed of clay just before collision
Using conservation of momentum
m v = (m + M) V
(0.012) v = (0.012 + 0.100) (9.8)
v = 91.5 m/s
Answer:
t = 1030 s
Explanation:
Let's start by calculating the resistance of the coil,
V = I (R + ri)
R = V / I - ri
R = 10/10 -0.03
R = 0.97 Ω
Now we can calculate the power supplied to the water
P = I2 R
P = 10 2 0.97
P = 97 w
Work energy is power for time
E = W = P t
t = W / P
t = 100 103/97
t = 1030 s
Answer:
D
Explanation:
A water cycle is constantly going on there is no definitive starting or stopping point
Answer:
2.933 kg m/s
Explanation:
impulse = change in momentum
impulse = mass ( final velocity - initial velocity )
= 0.0459 ( 63.9 - 0 )
= 0.0459 × 63.9
= 2.93301 kg m/s
or = 2.933 kg m/s up to 4 significant figures
Answer:
1. Mass and Velocity
2.The speed of the particles increases.
Explanation:
