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andreyandreev [35.5K]
3 years ago
5

Speed depends on how far something travels and

Physics
1 answer:
eimsori [14]3 years ago
8 0

Answer:

Speed depends on how far something is travelling and the time taken for the object to travel that distance

Explanation:

(In reference to the speed formula)  Speed=\frac{Distance(m)}{Time(m/s)}

Definition of speed:

Speed is the magnitude (unit) of the rate at which an object is moving.

(pls do correct me if I have any mistakes it makes a big difference to help each other out!)

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A volume of 25 milliliters is the same as a volume of ____________________ cubic centimeters.
PolarNik [594]

Answer:

25 cm³

Explanation:

In the conversion of units, we know that are one cubic centimeters (cm³) in a milliliter (mL) .

1 milliliter = 1 cubic centimeter

25 milliliters = 25 cubic centimeters

Therefore, a volume of 25 milliliters is the same as a volume of 25 cubic centimeters.

This ultimately implies that, the volume of an object in milliliters is equivalent to its volume in cubic centimeters.

6 0
3 years ago
The pressure at the bottom of a full barrel of water is Poriginal . Determine what happens to the pressure when the radius or he
Sholpan [36]

Answer:

a)   P' = P_original, b)  P ’= P_original + ρ  g Δh

Explanation:

The expression for nanometric pressure is

          P = ρ g h

where ρ  is the density of the liquid and h is the height

a) we change the radius of the barrel, but keeping the same height

as the pressure does not depend on the radius it remains the same

        P' = P_original

b) We change the barrel height

         h ’≠ h

we substitute in the equation

      P ’= ρ  g h’

      h ’= h + Δh

      P ’= ρ  g (h + Δh)

      P ’= (ρ  g h) + ρ  g Δh

      P ’= P_original + ΔP

In this case, the pressure changes due to the new height,

*if it is higher than the initial one, the pressure increases

*if the height is less than the initial one, the pressure is less

3 0
3 years ago
Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Both balls travel with a consta
bazaltina [42]

Answer:

B. Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.

Explanation:

Impulse created by ball Y  on ball X = 40 x 1/6 Ns

Ball X will also create impulse 40 / 6 on ball Y .

impulse = change in momentum .

impulse in Y = change in momentum in Y .

Initial momentum of Y  = .5 x 5 = 2.5

Let final velocity of Y after collision be v  in opposite direction .

change in momentum of Y = v - (-2.5 )

so,

v + 2.5 = 40 / 6 =  6.67

v =  4.17 m / s .

Option B is correct .

B. Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.

4 0
3 years ago
Read 2 more answers
You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching e
Ray Of Light [21]

Answer: a) C decreases; b) Q stays the same; c) E is the same

d) ΔV increase

Explanation: In order to explain this problem we have to consider the following:

C=εoA/d where A and d are the area and the separation of the plates, respectively.

Increasing d, produces a decrease of C.

Q remain constant becasuse the plates are charges and the wire are isoloted each other.

We also know that  ΔV=E*d where E is electric field between the plates.

And E= Q/εo*A  ( a constant between the plates)

As we can see  from above, ΔV depends directely of the d so if d increase ΔV also increase. To do that we have to do work on the system.

7 0
3 years ago
a guitar string is 0.620 m long, and oscillates at 234 Hz. if a player uses his finger to shorten the string to 0.480 m, what is
Nutka1998 [239]
Solve the x u will get 181.16

4 0
3 years ago
Read 2 more answers
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