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Kazeer [188]
3 years ago
9

What are good ways to remember formulas?

Physics
1 answer:
lidiya [134]3 years ago
4 0
If you study a week before you should memorize & study the night & day of
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Helpppp meeeee eee!! ​
jeka94

Answer: its a

Explanation: hope this help im sorry if its wrong

 

4 0
2 years ago
What is the function of the phytoplankton in ocean ecosystems?
vesna_86 [32]
Ok ok! It's A. Producer
5 0
3 years ago
An occupant of a car can survive a crash if the deceleration during the crash is less than 30 g. Calculate the force on a 64 kg
forsale [732]
The force on a 64 k person decelerating on that rate would be : 

F = ma

F = 64 kg x 30 x 9.8

= 18816 N

Hope this helps
6 0
3 years ago
A force of 10. N toward the right is exerted on a wooden crate initially moving to the right on a horizontal wooden floor. the c
Artyom0805 [142]

1) 5 N

The crate is initially moving, so we must calculate the force of kinetic friction, which is given by:

F_f = \mu_k mg

where

\mu_k=0.2 is the coefficient of friction between the crate (made of wood) and the floor (made of wood). The coefficient of kinetic friction between wood and wood is about 0.2.

mg=25 N is the weight of the crate

Substituting the numbers into the formula, we find

F_f=(0.2)(25 N)=5 N


2) 5 N

There are two forces acting on the crate along the horizontal direction:

- The force that pushes the crate toward the right, of magnitude F=10 N

- The force of friction, which acts in the opposite direction (so, towards the left), of magnitude F_f = 5 N

Since the two forces are in opposite directions, the net force is given by their difference:

F_{net}=F-F_f = 10 N-5 N=5 N


3) Yes

The crate is accelerating. In fact, according to Second Newton's Law:

F_{net}=ma (1)

where Fnet is the net force on the crate, m is its mass, a is its acceleration. We can immediately see that since Fnet is not zero, the acceleration is also non-zero, so the crate is accelerating.

We can even calculate the magnitude of the acceleration. In fact, the mass of the crate is given by:

m=\frac{Weight}{g}=\frac{25 N}{9.8 m/s^2}=2.55 kg

And by using (1) we find

a=\frac{F_{net}}{m}=\frac{5 N}{2.55 kg}=1.96 m/s^2


3 0
3 years ago
Which scientist is often called the “father of the atomic bomb” because of his work as the head of the manhattan project?
kirza4 [7]

Answer:

J. Robert Oppenheimer

Explanation:

He led the Manhattan project and created the first nuclear bomb in WWII

8 0
3 years ago
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