Given that : d = 5sin(pi t/4), So, maximum displacement, d = 5*(+1) = 5 Also, maximum displacement, d = 5*(-1) = -5
Answer:
8.3m/s
Explanation:
Given parameters:
mass of clay ball = 5kg
Speed of clay ball = 25m/s
mass of clay ball at rest = 10kg
speed of clay ball at rest = 0m/s
Unknown:
Velocity after collision = ?
Solution:
Since the balls stick together, this is an inelastic collision:
m1v1 + m2v2 = v(m1 + m2)
5(25) + 10(0) = v (5 + 10)
125 = 15v
v = 8.3m/s
Answer:
686.7N
Explanation:
Given data
Mass= 70kg
We know that the buoyant force experienced by the person is equal to the weight of the person
Hence the weight is
Weight = mass* Acceleration
Weight= 70*9.81
Weight= 686.7N
Therefore the weight is 686.7N
Answer:
Explanation:
The charge on the electron is
q=1.6×10^-19C
It moves in a path perpendicular to the electric field
Given that the uniform electric field is
E=3N/C.
We need to calculate Work
Distance moved is
d=15cm=0.15m
W=q ∫E.ds
Thus, the angle θ between the path and electric field is 90°, and the dot product E.ds is zero
E.ds= Eds Cos θ= Edscos90
Cos 90=0
Then E.ds=0
Now,
W=q ∫E.ds
W=q × 0
W=0J