Explanation:
The free fall acceleration is:
F = ma
20 N = (0.50 kg) a
a = 40 m/s²
The mass of Planet X is:
F = GMm / r²
20 N = (6.67×10⁻¹¹ Nm²/kg²) M (0.50 kg) / (4.0×10⁶ m)²
M = 9.6×10²⁴ kg
a) 10 m/s
b) 25 m
Explanation:
a)
The body is moving with a constant acceleration, therefore we can solve the problem by using the following suvat equation:
where
u is the initial velocity
v is the final velocity
a is the acceleration
t is the time
For the body in this problem:
u = 0 (the body starts from rest)
is the acceleration
t = 5 s is the time
So, the final velocity is
b)
In this second part, we want to calculate the distance travelled by the body.
We can do it by using another suvat equation:
where
u is the initial velocity
v is the final velocity
a is the acceleration
s is the distance travelled
Here we have
u = 0 (the body starts from rest)
is the acceleration
v = 10 m/s is the final velocity
Solving for s,
Answer:
1. 3 points
2. 6 points
3. goalkeeper
4. four quarters
5. eleven players
6. James Naismith
7. Duke nukem ( I'm not sure)
8. no
9. 1936
10. four
HOPE IT'S HELP :)
I think it is C. I hope I helped.
Answer
Correct Answer is C (Electromagnetic force)
Explanation:
weak nuclear force
The weak nuclear force acts inside individual nucleons. Weak nuclear force are short ranged forces. Weak nuclear force allows protons to turn into neutrons and vice versa through beta decay.
Strong nuclear force
Strong force is responsible for binding together the particles which built up a proton or neutron. It is responsible for holding the nuclei of atoms together,
Electromagnetic forces
Electromagnetic force is the force which act between charged particles. It is the unification of two forces (electric and magnetic force.
Gravity
Gravity is a force which acts between all bodies which have mass. It always attracts objects together, and although it is the weakest fundamental force. The force of gravity pulls objects towards Earth, causing things to fall.
