Explanation:
Given Data
Total mass=93.5 kg
Rock mass=0.310 kg
Initially wagon speed=0.540 m/s
rock speed=16.5 m/s
To Find
The speed of the wagon
Solution
As the wagon rolls, momentum is given as
P=mv
where
m is mass
v is speed
put the values
P=93.5kg × 0.540 m/s
P =50.49 kg×m/s
Now we have to find the momentum of rock
momentum of rock = mv
momentum of rock = (0.310kg)×(16.5 m/s)
momentum of rock =5.115 kg×m/s
From the conservation of momentum we can find the wagons momentum So
wagon momentum=50.49 -5.115 = 45.375 kg×m/s
Speed of wagon = wagon momentum/(total mass-rock mass)
Speed of wagon=45.375/(93.5-0.310)
Speed of wagon= 0.487 m/s
Throwing rock backward,
momentum of wagon = 50.49+5.115 = 55.605 kg×m/s
Speed of wagon = wagon momentum/(total mass-rock mass)
speed of wagon = 55.605 kg×m/s/(93.5kg-0.310kg)
speed of wagon= 0.5967 m/s
Answer:
3.93 m/s
Explanation:
= Mass of Ashley = 56 kg
= Mass of Miranda = 64 kg
= Initial Velocity of Ashley = 2.6 m/s
= Initial Velocity of Miranda = 5.1 m/s
v = Velocity of combined mass
As linear momentum is conserved
The speed at which they both slide down together is 3.93 m/s
Equation: v= (wavelength)(frequency)
V= 3.00 x 10^8 {I think you’ve meant to square it}
Wavelengths = ?
Frequency= 9.23 x 10^7 {I think you’ve meant to square it}
Plug what you have in the formula above:
3.00 x 10^8 = (wavelength)(9.23 x 10^7)
Now DIVIDE 9.23 x 10^7 by both sides.
You will get (3.00 x 10^8) / (9.23 x 10^7)
The wavelength = 3.25 meters
Hope this helps!
1. the amount of electric charge that they carried
2. the distance between them
Only light can travel through empty space, as sound is a vibration that uses a medium such as air to travel through. Electromagnetic waves do not need a medium.