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Olegator [25]
3 years ago
5

If the car traveled 754 meters in a straight line between 0 and 36 seconds, what was the

Physics
1 answer:
ArbitrLikvidat [17]3 years ago
4 0

Answer:

20.94 m/s

Explanation:

Recall that average velocity is defined as:

V = distance / time

Then, for our case:

V = 754 m / 36 sec = 20.94 m/s

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Explain three ways visual aids help you study
Katen [24]
Visual aids are tools that help to make an issue or lesson clearer or easier to understand and know (pictures, models, charts, maps, videos, slides, real objects etc.). ... Visual aids are those devices which are used in classrooms to encourage students learning process and make it easier and interesting.
7 0
3 years ago
A boat sends an ultrasound signal of frequency 30 kHz, and receives the signal after 6 s. If the speed of sound in water is 1500
natka813 [3]

Answer:

4500

Explanation:

hey there!

first we convert the khz to hz=30000hz

we use the formula 2d=distance×time

2d=1500×6

d=9000/2=4500

i think this is the right answer....

hope this helps u :)

3 0
3 years ago
Youre driving on a straight road (in the +x direction) at a constant speed of 27 m/s. In 10 seconds, you speed up to 34 m/s to p
aleksley [76]

To solve this problem we will apply the concepts related to the kinematic equations of linear motion. For such an effect we will define the average speed, as the distance traveled in the established time.

Our values are given under the following conditions:

v_i = 27m/s

x_1 = v_1 *t

x_1 = 27*10 = 270m

The final distance covered in those 10 seconds at 34 m / s would be

x_2 = 34*10

x_2 = 340m

Therefore the average speed would be the sum of those distances in the total travel time

v_{Avg} = \frac{340+270}{20}

v_{Avg} = 30.5m/s

Therefore the average velocity is 30.5m/s

6 0
3 years ago
Acceleration is directly proportional to the applied force and inversely proportional to the object's mass." Which formula corre
dolphi86 [110]

Answer:

a=m/f

Explanation:

ifkvmfkb gjbn trkbv mrgvbmnrgvngkbngjbntguj

6 0
3 years ago
A pulsed proton beam is fired at a target. Each pulse lasts 45.0 ns, and there are protons in each pulse, each proton having a s
skelet666 [1.2K]

Answer:

P = n P₀ 4.9 10¹⁴  Pa

Explanation:

The radiation pressure for full absorption is

        P = S / c

Where S the pointing vector, which is equal to the intensity of the beam that is defined as the energy per unit area per unit time

The energy of the protons can be calculated

       Em = K = ½ m v²

Area

          A = π r²

Intensity is

          I = n ½ m v² / π r²

          I = ½ n m /π v² / r²

We replace

         S = U / t A

          S = ½ n m /π v² / r² Δt

The pressure is

           P = 1/c   (½ n m /π (v / r Δt)²2

           Δt = 45 10⁻⁹ s

           P = n [½ m /πc  (v/r)²] 4.9 10¹⁴

The amount in square brackets is the pressure that a proton creates, which is why it is useful

         P = n P₀ 4.9 10¹⁴  Pa

Where Po is the pressure created by a proton

4 0
4 years ago
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