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
sweet-ann [11.9K]
3 years ago
12

OMG PLZ PLZ HELP!!

Physics
2 answers:
horsena [70]3 years ago
4 0
1,3,4 I’m pretty sur e
Ede4ka [16]3 years ago
4 0

Answer:

1,4,5 is right

Explanation:

You might be interested in
The ____ approach to managing innovation assumes that innovation is a predictable process made up of a series of steps and that
dybincka [34]
The "generational change"  approach to managing innovation assumes that innovation is a predictable process made up of a series of steps and that compressing the time ittakes to complete those steps can speed up innovation.
5 0
3 years ago
In an incline projection the horizontal motion is uniform motion (vx)= constant why?​
svet-max [94.6K]

Answer:

it is constant because there is not any force that oppose the horizontal motion

but the vertical velocity is not constant because there is a gravitational force that oppose the motion .

5 0
3 years ago
What is the magnitude of electric field at apoint 2 meter from a point charge q= 4nc​
rjkz [21]
I do not have a clue i need to answer so i can ask questions sorry
8 0
3 years ago
A phone cord is 4.89 m long. The cord has a mass of 0.212 kg. A transverse wave pulse is produced by plucking one end of the tau
slega [8]

Answer:

Tension in Cord=174 N

Explanation:

Given Data

L (Phone Cord Length)=4.89 m

m (Cord Mass)=0.212 Kg

T (Time for four trips)=0.617 s

Tension=?

Solution

V=λ×f

V=\frac{8*4.89}{0.617}\\ V=63.4m/s

Sigma=\frac{mass}{length}\\ Sigma=\frac{0.212}{4.89}\\ Sigma=0.0433 \frac{kg}{m}

Wave Speed=\sqrt{\frac{Tension}{Sigma} }\\ \\V=\sqrt{\frac{T}{Sigma} }\\ V^{2}=\frac{T}{Sigma}\\  T=V^{2}*Sigma\\ T=(63.4)^{2}*(0.0433)\\ T=174 N

5 0
3 years ago
Did the kinetic frictional coefficient (for the wood/aluminum and felt/aluminum cases) vary with area of contact
lawyer [7]

Answer:

Explanation:

Friction is defined as a force which acts at the surface of separation between two objects in contact and tends to oppose motion of one over the other.

While kinetic friction is the force that must be overcome so that a body can move with uniform speed over another.

Hence let consider one of the laws of friction which states that: '' Frictional force is independent of the area of the surfaces in contact.''

The value did not vary with area. This is because when calculating the kinetic fiction, the total contact area is not relevant and only the total weight of the system as well of as the block is put into consideration.

5 0
3 years ago
Other questions:
  • Why not two magnetic field lines can intersect? why not it is possible?
    13·1 answer
  • A person pulls a crate of mass M = 63 kg a distance 40.0 m along a horizontal floor by a constant force FP = 130 N, which acts a
    6·1 answer
  • .2, A car starting from rest has an acceleration of
    5·1 answer
  • Before DNA was discovered, in which materials did scientists think the genetic material was stored?
    8·2 answers
  • a train has an initial velocity of 30 m/s. If the train accelerates uniformly at a rate of 6.3 m/s ^ for 2.8 seconds what is the
    11·1 answer
  • A block of amber is placed in water and a laser beam travels from the water through the amber. The angle of incidence is 35 degr
    7·1 answer
  • Extra glucose is _____.
    9·2 answers
  • Can you find the net force of one vertical force and one horizontal force, such as in the picture below? Yes or no, and why?
    13·2 answers
  • A typical laboratory centrifuge rotates at 4000 rpm. Testtubes have to be placed into a centrifuge very carefully because ofthe
    12·1 answer
  • Sound travels as transverse waves through matter.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!