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
dexar [7]
3 years ago
11

A robot arm moves so that P travels in a circle about point B, which is not moving. Knowing that P starts from rest, and its spe

ed increases at a constant rate of 10 mm/s2, determine (a) the magnitude of the acceleration when t=4s.

Physics
1 answer:
algol133 years ago
4 0

Answer

Acceleration=>10.20mm/s

Explanation

Below in image

You might be interested in
A rock exerts 5000 Pa of pressure on the ground. If the rock weighs 250 N, how much area is in contact with the ground?
ololo11 [35]

P = F/S - S = F/P = 250/5000= 0.05 m2

4 0
3 years ago
Read 2 more answers
Two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 221
8_murik_8 [283]

Answer:

v = 8.8 m /s

Explanation:

For listener and source going away from each other the formula of Doppler effect is as follows

\frac{f}{f_0} = \frac{V-v}{V+v}

V is velocity of sound , v is velocity of listner and source of sound

f₀ is apparent frequency and f is real frequency

V = 343 , v = ? ,f = 210 , f₀ = 221

Put these value in the relation above

[tex]\frac{210}{221} = \frac{343-v}{343+v}[/tex]

v = 8.8 m /s

6 0
3 years ago
A diffraction grating is placed 1.00 m from a viewing screen. Light from a hydrogen lamp goes through the grating. A hydrogen sp
Colt1911 [192]

Answer:

λ = 396.7 nm

Explanation:

For this exercise we use the diffraction ratio of a grating

           d sin θ = m λ

in general the networks works in the first order m = 1

we can use trigonometry, remembering that in diffraction experiments the angles are small

           tan θ = y / L

           tan θ = \frac{sin \theta}{cos \theta} = sin θ

           sin θ = y / L

we substitute

          d \  \frac{y}{L} = m λ

with the initial data we look for the distance between the lines

           d = \frac{m \lambda \ L}{y}

           d = 1 656 10⁻⁹ 1.00 / 0.600

            d = 1.09 10⁻⁶ m

for the unknown lamp we look for the wavelength

           λ = d y / L m

           λ = 1.09 10⁻⁶ 0.364 / 1.00 1

           λ = 3.9676 10⁻⁷ m

           λ = 3.967 10⁻⁷ m

         

we reduce nm

           λ = 396.7 nm

8 0
3 years ago
The magnification is less than 1 what does it mean​
igomit [66]
If magnification is less than one it means the image is the same exact size as the object.
4 0
3 years ago
4. Who was the proponent of the Neo-classicism? a) Claude Debussy b) Joseph Maurice Ravel c) Igor Stravinsky d) Arnold Schoenber
nirvana33 [79]

Who was the proponent of the Neo-classicism?

a) Claude Debussy

b) Joseph Maurice Ravel

c) Igor Stravinsky

d) Arnold Schoenberg

4 0
3 years ago
Other questions:
  • The diagram shows that currently about 100 gigatons/year of carbon are moved from the atmosphere to vegetation on land. Which pr
    15·2 answers
  • Which of the following is a good electrical conductor?
    9·1 answer
  • What is the equation for the law of universal gravitation?
    12·2 answers
  • A peg is located a distance h directly below the point of attachment of the cord. If h = 0.760 L, what will be the speed of the
    7·1 answer
  • A car starts from rest and reaches 20 m/s in 5 seconds. What’s the distance does the car travel.
    9·1 answer
  • Three resistors connected in parallel have individual values of 4.0, 6.0, and 10.0 Ω, respectively. If this combination is conne
    13·1 answer
  • What do you see when you stand infront of a concave mirror, beyond its focal point, and look at yourself?
    9·2 answers
  • List three ways in which decreasing the need to mine gold and reducing its harmful environmental effects. (Core Case Study) coul
    11·1 answer
  • How does the momentum change if the mass of an object is doubled?
    11·1 answer
  • You cover the following displacements every day going to school: d1=50 m, E and d2=95 m, N. You do this for 12 minutes. a) What
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!