Explanation:
The object's weight on Earth is 5.0 N, so its mass is:
F = ma
5.0 N = m (10 m/s²)
m = 0.50 kg
The acceleration on the moon is g/6 = (10 m/s²) / 6 = 1.67 m/s².
The velocity it reaches after 3.0 seconds is:
v = at + v₀
v = (1.67 m/s²) (3.0 s) + (0 m/s)
v = 5 m/s
So the momentum is:
p = mv
p = (0.50 kg) (5 m/s)
p = 2.50 kg m/s
You just said that the EMF across the circuit is 7V. So the voltage is 7 volts.
Answer
Work done will be and it will be positive
Explanation:
We have given charge
We have to find work done in moving the charge from 15 volt to 8 volt
Let
So potential difference
We know that work done , here Q is charge and V is potential difference
So work done
It will be positive work done because work is done in moving charge from higher potential to lower potential
The correct answer is "contact metamorphism." A plume of magma pushes its way into a crack in Earth's crust. The heat causes contact metamorphism. Contact metamorphism is a <span>metamorphism due to contact with or proximity to an igneous intrusion.</span>
Answer:
a) I = 10⁻² W / m², b) β = 104.8 db
Explanation:
a) For this exercise we use the definition of decibels
β = 10 log
where I and Io are the intensities produced and the sound threshold
I₀ = 10⁻¹² W / m²
log \frac{I}{I_o} = β / 10
I = Io
let's calculate
I = 10⁻¹²
I = 10⁻² W / m²
b) each toad produces the same sound for which the total intensity is
I_total = 3 I
I_total = 3 10⁻² W / m²
expressed in decibels
β = 10 log ()
β = 104.8 db