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
defon
3 years ago
6

I need help with this please

Physics
1 answer:
Firdavs [7]3 years ago
6 0
C is the answer to the question
You might be interested in
What is one action a person can take to help ensure ability to participate in physical activity thoughout life
ivanzaharov [21]

Answer:

They can join a gym or a class to help keep themselves motivated to exercise.

Explanation:

8 0
2 years ago
A penny is placed on a rotating turntable. where on the turntable does the penny require the largest centripetal force to remain
Mama L [17]

m = mass of the penny

r = distance of the penny from the center of the turntable or axis of rotation

w = angular speed of rotation of turntable

F = centripetal force experienced by the penny

centripetal force "F" experienced by the penny of "m" at distance "r" from axis of rotation is given as

F = m r w²

in the above equation , mass of penny "m"  and angular speed "w" of the turntable is same at all places. hence the centripetal force directly depends on the radius .

hence greater the distance from center , greater will be the centripetal force to remain in place.  

So at the edge of the turntable , the penny experiences largest centripetal force to remain in place.

4 0
3 years ago
You hang a heavy ball with a mass of 30 kg from a tungsten rod 2.8 m long by 1.5 mm by 2.6 mm. You measure the stretch of the ro
guajiro [1.7K]

Answer:

Young's modulus (Y) = 3.56×10^11 N/m^2

The speed of sound in tungsten = 6166.4 m/s

Explanation:

Young's modulus (Y) = stress/strain

Stress = force/area

Force = mg = 30×9.8 = 294 N

Area = 1.5 × 2.6 = 3.9 mm^2 = 3.9/10^6 = 3.9×10^-6 m^2

Stress = 294/3.9×10^-6 = 7.54×10^7 N/m^2

Strain = extension/length

Extension = 0.000594 m

Length = 2.8 m

Strain = 0.000594/2.8 = 2.12×10^-4

Y = 7.54×10^7/2.12×10^-4 = 3.56×10^11 N/m^2

Y = h × rho × g

rho = 18.7 g/cm^3 = 18.7 g/cm^3 × 1 kg/1000 g × (100 cm/1 m)^3 = 18,700 kg/m^3

h = 3.56×10^11/(18,700×9.8) = 1.94×10^6 m

From the equations of motion

v^2 = u^2 + 2gh =

Initial speed (u) = 0 m/s

v = sqrt (2×9.8×1.94×10^6)

v = 6166.4 m/s

7 0
3 years ago
Read 2 more answers
PLEASE HELP! Can you do the write about it! Will thank and try to mark brainiest!
goblinko [34]
Move the objects faster to get more friction.
8 0
3 years ago
Read 2 more answers
How do you know there is current in a circuit?
Ksivusya [100]

if there is not a reaction


5 0
3 years ago
Other questions:
  • Who expressed particles by wave equations?
    13·1 answer
  • The linear expansion of a material depends on which of the following?
    11·1 answer
  • Just wondering if I did this right
    12·1 answer
  • The force on an object is given by the equation F = ma. In this equation, F is the force, m is the mass, and a is the accelerati
    8·1 answer
  • PLEASE HELP ME 20 POINTS AND I WILL MARK BRAINLIEST!!!
    10·2 answers
  • A bird flies in the xy-plane with a velocity vector givenby v = (α-βt2)i + γtj with α=2.4m/s,β=1.6m/s3 and γ=4m/s2 . Thepositive
    6·1 answer
  • You are given aqueous solutions of six different substances and asked to determine whether they are strong, weak, or nonelectrol
    8·1 answer
  • El movimiento de un bote que se transporta en un rio ocurre en ?
    14·1 answer
  • HOW MANY SECONDS ARE THERE IN 3 MONTHS OF MARCH​
    9·1 answer
  • Match each space mission with the correct milestone.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!