Answer:
The period of the telescope observe the light flashes is 1.2 sec.
(e) is correct option.
Explanation:
Given that,
Flashes of light = 1 sec
Speed of telescope =0.6c
We need to calculate the period of the telescope observe the light flashes
Using formula of period

Put the value into the formula



Hence, The period of the telescope observe the light flashes is 1.2 sec.
Convert 200 grams and 100 grams to 2kg and 1kg respectively
momentum = mass x velocity
momentum = 1 x 2
initial momentum = 2 kg m/s
second scenario, cart b is moving -.5 m/s
momentum = mass x velocity
momentum = 1 x -.5
final momentum = -.5 kg m/s
momentum has to be the same in both scenarios so the 2 kg truck has to have a momentum of 2.5 kg m/s to push the total momentum of the second scenario to be 2 kg m/s like the first scenario
2.5 = 2 x velocity
velocity of cart a after the collision = 1.25 m/s
Pv= nRT; n/V = p/rt; g/liter = moles/liters * 29.0g/mole
Answer:
v₀ = 6.64 m / s
Explanation:
This is a projectile throwing exercise
x = v₀ₓ t
y = y₀ + v_{oy} t - ½ g t²
In this case they indicate that y₀ = 1.8 m and the point of the basket is x=4.9m y = 3.0 m
the time to reach the basket is
t = x / v₀ₓ
we substitute
y- y₀ =
y - y₀ = x tan θ -
we substitute the values
3 -1.8 = 3.0 tan 60 -
1.2 = 5.196 - 176.4 1 / v₀²
176.4 1 / v₀² = 3.996
v₀ =
v₀ = 6.64 m / s