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
slava [35]
3 years ago
14

Help me plzzz I need answers

Physics
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

i think it is B

Explanation:

You might be interested in
What is the volts for a cord that has a current of 18 and resistance of 2 ohms
Dvinal [7]

Answer:

9

Explanation:

i think not too sure but yea

5 0
2 years ago
The suspension system of a 1700 kg automobile "sags" 7.7 cm when the chassis is placed on it. Also, the oscillation amplitude de
spin [16.1K]

Answer:

the spring constant k = 5.409*10^4 \ N/m

the value for the damping constant \\ \\b = 1.518 *10^3 \ kg/s

Explanation:

From Hooke's Law

F = kx\\\\k =\frac{F}{x}\\\\where \ F = mg\\\\k = \frac{mg}{x}\\\\given \ that:\\\\mass \ of \ each \ wheel = 425 \ kg\\\\x = 7.7cm = 0.077 m\\\\g = 9.8 \ m/s^2\\\\Then;\\\\k = \frac{425 \ kg * 9.8 \ m/s^2}{0.077 \ m}\\\\k = 5.409*10^4 \ N/m

Thus; the spring constant k = 5.409*10^4 \ N/m

The amplitude is decreasing 37% during one period of the motion

e^{\frac{-bT}{2m}}= \frac{37}{100}\\\\e^{\frac{-bT}{2m}}= 0.37\\\\\frac{-bT}{2m} = In(0.37)\\\\\frac{-bT}{2m} = -0.9943\\\\b = \frac{2m(0.9943)}{T}\\\\b = \frac{2m(0.9943)}{\frac{2 \pi}{\omega}}\\\\b = \frac{m(0.9943) \ ( \omega) )}{ \pi}

b = \frac{m(0.9943)(\sqrt{\frac{k}{m})}}{\pi}\\\\b = \frac{425*(0.9943)(\sqrt{\frac{5.409*10^4}{425}) }    }{3.14}\\\\b = 1518.24 \ kg/s\\\\b = 1.518 *10^3 \ kg/s

Therefore; the value for the damping constant \\ \\b = 1.518 *10^3 \ kg/s

5 0
3 years ago
What is the change in internal energy if 60J of heat are released from a system and 20J of work is done on the system? Use U=Q-W
Ganezh [65]
D because 60-20= 40J
5 0
3 years ago
A wooden cube with the mass of 1kg is placed on a frictionless plane that makes an angle of 30° with the floor.
Anni [7]

Answer:

I dont know

Explanation:

8 0
2 years ago
If a pizza delivery guy declares himself the leader over the other pizza delivery people, he probably won't have many people obe
NemiM [27]

Answer:

the last one i think...

4 0
3 years ago
Other questions:
  • A student measures the speed of a rolling ball three times. She adds the measurements and divides by 3.What quantity did the stu
    5·2 answers
  • What is also called compression waves
    8·1 answer
  • Tomarrow last day of school
    10·1 answer
  • Drag the tiles to the correct boxes to complete the pairs. Match each form of energy to its description. motion energy thermal e
    10·2 answers
  • Can someone please help meeeeee please
    7·1 answer
  • Two circular coils are concentric and lie in the same plane. The inner coil contains 120 turns of wire, has a radius of 0.012 m,
    10·1 answer
  • Which refers to the chemical name of CO? carbon monoxide carbon oxide monocarbon monoxide monoxide carbon
    8·2 answers
  • can someone please help me A wave’s velocity is 120 m/sec with a frequency of 6 Hz. What is its wavelength?
    13·2 answers
  • The two rods are now firmly attached together as in Figure 2.
    12·1 answer
  • a tire has a tread pattern with a crevice every 4.00 cm. each crevice makes a single vibration as the tire moves. what is the fr
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!