Answer:
Ос.
The spacing between particles increases.
Heat causes greater particle activity, and the particles
are farther apart.
Answer:
Explanation:
1. Find spring constant k. From a free body diagram, you will get the forces on the 10 kg mass, with a displacement d. It will be gravity pulling the mass down and the spring force pulling the mass up. The 10 kg mass is in equilibrium. The resulting equation will be:

2. Use the result from 1. to find the equations of motion. In general they are given by:
, where ω is:
To find the amplitude A and the phase angle Ф, use the given initial conditions:
m₂ = 2 kg, x(0) = -0.25 m, v(0) = 2m/s

Solving for Ф:

Solving for A:

The equation for x(t) is now:

The frequency f is given by:
The period T is given by:
Answer:
T = 1.73 kg
Explanation:
Let's use Newton's second law for this balance problem
We draw a coordinate system with the x axis parallel to the plane and the Y axis perpendicular
The only force we have to lay down is the weight (W)
Wx = W sin θ
Wy = W cos θ
Wx = 2.0 ain 60
Wx = 1.73 kg
Wy = 2.0 cos 60
Wy = 1.0 kg
Y Axis
N-Wy = 0
X axis
T- Wx = 0
T = Wx
T = 1.73 kg
Answer:
Part a)
a = - 8.45 m/s/s
Part b)

Part c)

Explanation:
Part a)
when car apply brakes then the friction force on the car in front of us is given as

here we need to find deceleration due to friction



Part b)
Braking distance of the car is the distance that it move till it stops
so we will have



Part c)
Since we know that average reaction time for human is 0.424 s
now we know that during reaction time our car will travel at uniform speed
so we will have


