0.2 atm.
by boyles law, PV= constant. hence, p1*v1=p2*v2
so, 400*1=p2*2000 (careful with units, 1litre= 1000 ml)
so, you get p2=0.2 atm
First we calculate the acceleration of the cart:
a = (v₂ - v₁) / (t)
a = (7 m/s - 3 m/s) / (8 s)
a = 4 m/s / 8 s
a = 0.5 m/s²
Using the Newtons Second Law:
F = m×a
F = (10 kg)(0.5 m/s²)
F = 5 N
<h2>The correct option is C</h2>
Answer:
1.Close
2.Exert inter.olecular force
3.Same
4.can
- loosely
- exert kinetic energy
- move
- very loose packed
- freely
- also exert kinetic enegy
The three things that are necessary are power, a force, and movement in the opposite direction of the applied force.
Answer:
F = 11046 N
Explanation:
given,
mass of the baseball (m)= 145 g = 0.145 Kg
horizontal speed(u) = -36 m/s
ball hit is straight back(v) = 47.8 m/s
time of contact = ?
using formula of impulse
Impulse = change in momentum
I = m v - m u
I = 0.145 x (47.8 - (-36))
I = 0.145 x (83.8)
I = 12.151 kg.m/s
we also know
I = F x t
now,
F x t = 12.151 kg.m/s
F x 1.1 ms = 12.151
F = 11046 N