Photoelectric effect is the emission of electrons by a substance that has been subjected to electromagnetic energy
Answer:
50kPa and if the area decreases, the pressure increases
Explanation:
P=F/A; P=pressure, F=force, A=area
85000N/1.7 m^2 = 50000 N/m^2; Pa = Pascal = N/m^2
=50 kPa
Answer: 4.5 x 10^-36 N
Explanation: The interaction between the charges is not electrical because the distance ( between the protons) is too large.
The interaction is gravitational because one is placed on earth and the other on the moon.
The force of repulsion between these two protons can be gotten using newton's law of gravitational force which is mathematically given below as
F=(G*m1*m2)/r²
F = Gravitational force
G = gravitational constant =6.674 x 10^-11
m1 = mass of the first proton =1g=0.001kg
m2 = mass of second proton =1g=0.001kg
r = distance between the earth and the moon = 3.844 x 10^9m
Slotting the parameters into the formula, we have that
F= 6.674x10^-11 x 0.001 x 0.001/(3.844 x 10^9)²
F= 6.694 x 10^-17/ 14.77 x 10^18
Finally
F = 4.5 x 10^-36N
is there more to this? if so i would love to help you!!
<span>605.3 kilojoules
First, convert the 105.0 km/h to m/s
105.0 km/h * 1000 m/km / 3600 s/h = 29.16666667 m/s
Now calculate the energy using the E = 0.5 M V^2 formula
E = 0.5 * 1423 kg * (29.16666667 m/s)^2
E = 711.5 kg * 850.69 m^2/s^2
E = 605269.0972 (kg m^2)/s^2
E = 605269.0972 J
E = 605.2690972 kJ
Rounding to 4 significant figures gives 605.3 kilojoules</span>
