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lys-0071 [83]
4 years ago
7

The graph below shows the relationship between speed and time for two objects, A and B. Compare with the acceleration of object

B, the acceleration of object A is
A. Greater
B. The same
C. Lesser
D. One-third as less

Physics
2 answers:
Fiesta28 [93]4 years ago
7 0
Answer is C: Greater
kolbaska11 [484]4 years ago
5 0

Answer:

A) greater

Explanation:

acceleration is calculated by dividing velocity over time..so by calculating, you find acceleration of A is greater than that of B

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Guys No one's answering my question so sad! Once again I'm asking the same question –Here
nexus9112 [7]

For the front glass of the car to get wet, V_c \geq 10 \ m/s.

The given parameters:

  • <em>Speed of the car, = Vc</em>
  • <em>Speed of the rain, = 10 m/s</em>

The relative velocity of the car with respect to the falling rain is calculated as;

V_{C/R} = V_C- V_R

  • If the speed of the car equals the speed of the rain, the rain will fall behind the car.
  • If the speed of the rain is greater than speed of the car, the rain will fall far in front of the car.
  • If the speed of the car is greater than speed of the rain, the rain will fall on the car.

Thus, for the front glass of the car to get wet, V_c \geq 10 \ m/s.

Learn more about relative velocity here: brainly.com/question/17228388

8 0
3 years ago
Parallel light waves hit the surface of a still lake and reflect in the same direction. Which interaction of light and matter do
otez555 [7]
Parallel light waves hit the surface of a still lake and reflect in the same direction and the interaction of light and matter that it illustrates is called regular reflection. Regular reflection occurs whenever the reflecting surface is very smooth. The surface of the still lake is smooth. I hope the answer helps you.
5 0
3 years ago
Read 2 more answers
A circular conical reservoir has depth 20 feet and radius of the top 10 feet. water is leaking out so that the surface is fallin
levacccp [35]

As per given condition we know that vertex angle of the cone is given as

tan\theta = \frac{R}{H}

so here we can say that vertex angle will remain constant

so here

\frac{r}{y} = \frac{R}{H}

\frac{r}{8} = \frac{10}{20}

r = 4 feet

now for the volume we can say

V = \frac{1}{3}\pi r^2 y

also we can say

r = \frac{y}{2}

so here we will have

V = \frac{1}{3}\pi (\frac{y}{2})^2y = \frac{1}{12}\pi y^3

now for volume flow rate

Q = \frac{dV}{dt} = \frac{3}{12}\pi y^2\frac{dy}{dt}

Q = \frac{1}{4}\pi y^2 v_y

now plug in all data

Q = \frac{1}{4} \pi (8)^2 (12) ft^3/h

Q = 603.2 ft^3/h

4 0
3 years ago
Three spheres of different radii have the same amount of net charge Q uniformly distributed over the volume of spheres (spheres
miskamm [114]

Answer:

E_1 = E_2 > E_3

Explanation:

Given:

- Charged sphere 1 has a radius = R/2

- Charged sphere 2 has a radius = R

- Charged sphere 3 has a radius = 2R

- All charged non conducting spheres have equal Q charge

Find:

- Rank electric field created by each sphere at distance r = R. Greatest to lowest.

Solution:

- The electric field of a non-conducting uniform distributed charge sphere @ r greater than or equal to radius of the sphere is given by:

                                            r >= radius

                                            E = k*Q / r^2

For spheres 1 and 2, the distance r = R is either on surface or outside the sphere. So,

                                             E_1 = k*Q / R^2

                                             E_2 = k*Q / R^2

Hence, both sphere 1 and 2 have equal Electric field at r = R.

- The electric field of a non-conducting uniform distributed charge sphere @ r less than to radius of the sphere is given by:

                                            r < radius

                                            E = k*Q*r / (Radius)^3

For sphere 3, the distance r = R is within the sphere. So,

                                             E_3 = k*Q*R / 8R^3

                                             E_3 = k*Q/ 8R^2

Hence, sphere 3 has less electric field at point r = R.

So the order is:                    E_1 = E_2 > E_3

                 

7 0
3 years ago
2. Imagine a new planet was discovered. Astronauts will be visiting soon. Prior to landing on the planet, located
SashulF [63]
Marth or eartrs buttttt
8 0
3 years ago
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