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Charra [1.4K]
3 years ago
9

PLEASE PLEASE PLEASE can i have some help!

Physics
1 answer:
matrenka [14]3 years ago
4 0
Hi,

I've found a link that should assist you or answer your question.
http://click.dji.com/ANbvbbP7bwUWtSACp6U_?pm=link&as=0004

Have a nice day!
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What ramp angle would produce an acceleration of 2 m/s2 for a cart rolling down? Assume no friction and that the angle is measur
r-ruslan [8.4K]
From Newton's second law:
a = F/mass
Therefore, acceleration of an object rolling a ramp would be:
a = g(sin theta) - friction coefficient (g) (sin theta)
The negative sine is due to the kinetic energy opposing the gravity

We are given that the friction coefficient is zero, the g is a constant = 9.8 m/sec and the acceleration is 2 m/sec^2
Substituting in the equation, we get:
2 = 9.8 sin(theta)
sin (theta) = 0.20408
theta = 11.7757 degrees 
7 0
3 years ago
Which method of popcorn popping transfers heat into the kernels without any direct
Svetlanka [38]

Answer:

It is cause by radiation that's the answer

Explanation: the heat project sun rays towards the popcorn which causes it to pop

6 0
3 years ago
If the force is 4 newtons between two charged spheres separated by 3 centimeters, calculate the force between the same spheres s
il63 [147K]

Answer:

1 Newton

Explanation:

F=9*10^9*q0q1/r^2]]

F=9*10^9*(q0q1)/ r^2

r=3cm

F=4N

F=9*10^9*(q0q1)/3^2

4=9*10^9*(q0q1)/9

4=10^9 q0q1

q0q1=4/10^9

q0q1=4*10^-9

To calculate the force between the forces at a distance of 6 cm

F=9*10^9*(q0q1)/ r^2

=9*10^9*(4*10^-9)/6^2

=9*10^9*(4*10^-9)/36

=10^9*4*10^-9/4

=10^9*10^-9

=1 Newton

7 0
3 years ago
If you start with two sinusoidal waves of the same amplitude traveling in phase on a string and then somehow phase-shift one of
andrew11 [14]

Explanation:

Two waves with the same wavelength are in phase if there phase difference is zero or an integral multiple of wavelength. Thus the integer part of any difference expressed in wavelength can be discarded.

The phase difference of 5.4 wavelength is equivalent to is one of 0.4 wavelength thus the interference is an intermediate interference close to fully destructive.

7 0
4 years ago
A baseball is thrown a velocity of 20 m/s. It takes the 20 kg ball 10 seconds 5 points
liberstina [14]

Answer: 40 Newton

Explanation:

Mass of baseball = 20 kg

Velocity of baseball = 20 m/s.

Time taken for throwing = 10 seconds

Since acceleration is the rate of change of velocity per unit time

i.e Acceleration = velocity / time taken

Acceleration = (20 m/s / 10seconds)

Acceleration = 2m/s^2

Now, force required to throw the baseball is a product of mass and acceleration

i.e Force = Mass x acceleration

Force = 20 kg x 2m/s^2

Force = 40Newton

Thus, 40 newton of force is required to throw baseball to reach the plate

7 0
3 years ago
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