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Butoxors [25]
3 years ago
12

An object is dropped and falls freely to the ground with an acceleration of g. If it is thrown upward at an angle instead, its a

cceleration would be:
Physics
1 answer:
Savatey [412]3 years ago
5 0

Answer:

g

Explanation:

if an object is thrown upward or at any angle, the acceleration acting on that object is the same as acceleration due to gravity which always acts towards the vertically downwards direction because there is no acceleration or the force acting on the object in horizontal direction.

Thus, the acceleration is same as acceleration due to gravity g.  

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A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle may n
uranmaximum [27]

The Doppler effect is the right concept to solve this problem. The Doppler effect is understood as the change in apparent frequency of a wave produced by the relative movement of the source with respect to its observer. Mathematically it can be described as,

f = (1-\frac{v_0}{v})f_0

Here,

f_0 = Frequency of the sound from the Whistle

f = Frequency of sound heard

v = Speed of the sound in the Air

Replacing we have that

1- \frac{v_0}{343} = \frac{20kHz}{21kHz}

\frac{v_0}{343} = 1-\frac{20}{21}

\frac{v_0}{343} = \frac{1}{21}

v_0 = \frac{1}{21}(343)

v_0 = 16.33m/s

Therefore the minimum speed to know if the whistle is working is 16.33m/s

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3 years ago
a 150 kg object takes a 1.5 minute travel to a 2500 straight path it begins you trip at traveling 120 miles an hour and it decel
crimeas [40]
I believe it’s acceleration is -1.11 m/s^2
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3 years ago
Which of the following would notbe taken into consideration when describing the quality of a sound? A.The frequency of the overt
Natalija [7]
<span>the one that should be taken as consideration when describing the quality of a sound is: D.The number of the overtones in the sound Too many overtones indicated that there is too many unrelated sound that make a lot of the sound's part became redundant and unecessary</span>
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Two examples of hydraulic brake​
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Answer:

1). Brake pedal or lever

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3 0
2 years ago
A bicycle has tires of radius 0.35 meters. If the bicycle is traveling at a constant speed of 7.8 m/s, at approximately what ang
lord [1]

22.3 rad/s

<h3>Further explanation</h3>

We will solve the question of uniform circular motion.

<u>Given:</u>

  • A bicycle has tires of radius \boxed{ \ R = 0.35 \ meters \ }
  • The bicycle is traveling at a constant speed of \boxed{ \ v = 7.8 \ m/s \ }

<u>Question:</u>

What angular speed are the tires rotating?

<u>The Process:</u>

Speed, angular speed, and radius are connected in the following formula:

\boxed{\boxed{ \ v = \omega R \ }}

The angular speed is worked out by

\boxed{ \ \omega = \frac{v}{R} \ }

All units are in the SI system so let us calculate the angular speed.

\boxed{ \ \omega = \frac{7.8 \ m/s}{0.35 \ m} \ }

Thus the value of the angular velocity of the rotating tire is \boxed{\boxed{ \ \omega = 22.3 \ rad/s \ }}

<u>An additional question:</u>

What is the frequency of tire rotation?

Recall this formula: \boxed{ \ \omega = 2 \pi f \ } \rightarrow \boxed{ \ f = \frac{\omega}{2 \pi} \ }

\boxed{ \ f = \frac{22.3 \ rad/s}{2 \pi} \ }

We get \boxed{\boxed{ \ f = 3.55 \ Hz \ }}

<h3>Learn more</h3>
  1. Arc CD is ²/₃ of the circumference of a circle. What is the radian measure of the central angle? brainly.com/question/2115496
  2. A triangle is rotated 90° about the origin brainly.com/question/2992432
  3. Particle's speed and direction of motion brainly.com/question/2814900

Keywords: a bicycle has tires of radius 0.35 meters. traveling, at a constant speed of 7.8 m/s, at approximately, angular speed, the tires rotating

7 0
3 years ago
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