Answer: yayyyyyyyyyyyy
Explanation: i hope nobody get coronavirus at school that would be terrible
hope it fun!
Answer:
The frequency is
Explanation:
From the question we are told that
The position of zero intensity is from the center
Now the wavelength of the sound is mathematical represented as
Now the frequency of the sound is mathematically represented as
substituting values
Answer:
Explanation:
= Distance covered = 1 m
= Time taken = 3.44 ns
c = Speed of light =
Velocity would be
Time in rest frame is given by
It lived before decaying
Heat used by electric heater :
Q = m • c • ∆T
Q = (75 kg)(4200 J/kg°C)(43°C - 15°C)
Q = 8.82 × 10⁶ J
Cost of electrical energy :
Cost = (8.82 × 10⁶ J)/(3.6 × 10⁶ J) • ($ 0.15)
Cost = $ 0.3675
Answer:
32500 kg m/s east, 42500 kg m/s west. Second car has larger momentum
Explanation:
The momentum of an object is given by
p = mv
where
m is the mass
v is the velocity
For the first car, m = 500 kg and v = 65 m/s east, so the momentum is
east
For the second car, m = 500 kg and v = 85 m/s west, so the momentum is
west
By comparing the two momentum, we see that the second car has larger momentum.