1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Burka [1]
4 years ago
14

A car travels at a constant rate for 100 miles going due west for one hour. Then it travels at a constant rate for another 75 mi

les west for one hour. What is the instantaneous velocity at any time during the first hour of the trip?
A. 92 mph west
B. 75 mph west
C. 100 mph west
D. 137 mph west
Physics
1 answer:
nirvana33 [79]4 years ago
7 0

Answer:

C. 100 mph west

Explanation:

Average velocity is total displacement over total time.  During the first hour, the average velocity is:

v_avg = 100 mi / 1 hr

v_avg = 100 mph west

Since the velocity is constant, the instantaneous velocity at any time equals the average velocity.

v = v_avg

v = 100 mph west

You might be interested in
(d) What type of transformation is done by the following things?
mafiozo [28]

Answer:

human body is answer according to our studies

7 0
3 years ago
If mass and velocity are unknown when using de Broglie's wavelength formula, what alternative value must we have to successfully
mojhsa [17]

Answer:

The particle momentum, p

Explanation:

A particle's de Broglie's wavelength is an indication of the scale in length where the particle's wave-like properties are important. The symbol of de Broglie wavelength is λ or \lambda _{dB} given as follows;

The de Broglie's wavelength formula is given as follows;

\lambda = \dfrac{h}{m \cdot v} = \dfrac{h}{p}

Where;

λ = The wavelength of the particle in meters

v = The velocity of the particle in meters/seconds

m = The mass of the particle in kilograms

p = The momentum of the particle

h = Planck's constant = 6.626 × 10⁻³⁴ J/Hz

Therefore, the alternative value that we must have to successfully determine the wavelength if the mass and velocity are unknown, is the momentum, p of the particle.

5 0
3 years ago
Which of the following gives good evidence for the particle nature of EM radiation?
k0ka [10]

One phenomenon which well presents the idea of wave particle duality is the photoelectric effect.

<h3>What is wave particle duality?</h3>

The term wave particle duality has to do with the fact that a wave can behave sometimes as a wave and sometimes as a particle. This was well established by the work of De Broglie.

One phenomenon which well presents the idea of wave particle duality is the photoelectric effect.

Learn more about wave particle duality:brainly.com/question/14953274

#SPJ1

6 0
2 years ago
Read 2 more answers
A car traveling 29 mi/h accelerates uniformly for 8.5 s, covering 471 ft in this time.What was its acceleration? Round your answ
Andrei [34K]

Explanation:

We know that :

u = 29 mph = 12.96 m/s

S = 471 ft = 143.5 m

t = 8.5 sec

s = ut +  \frac{1}{2} a {t}^{2}

143.5 = 12.96 * 8.5 + 1/2 * a * 72.25

a = 66.68 / 72.25

a (Acceleration) = 0.92 m/sec^2

= 3.01 ft/sec^2

8 0
3 years ago
Which simple machines combine to make scissors?
marysya [2.9K]
The right answer is A. I'm one lever and two wedges

Hope this helps
6 0
4 years ago
Other questions:
  • Who first demonstrated the system of linear perspective?
    5·1 answer
  • All points to the blank of zero on a horizontal number line are negative.
    9·2 answers
  • What would occur if you were to replace the bulb in the circuit with a much brighter bulb?
    11·2 answers
  • What is the average density of the Earth?
    9·1 answer
  • Please help ASAP!!
    6·1 answer
  • 58.5 million excess electrons are inside a closed surface. What is the net electric flux through the surface?
    5·1 answer
  • A positive rod is touched to a neutral sphere. There is a bar with positively charged particles attached to a ball with positive
    15·1 answer
  • Brainliest..... plz help!!!!!!!!!
    7·1 answer
  • Which statement best describes the overall function of the human respiratory system? A. The heart pumps blood containing carbon
    9·1 answer
  • Electromagnetic quiz, need help with this one*
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!