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cricket20 [7]
3 years ago
9

The students conduct experiment 2 in which the same block is connected to the same spring on a horizontal surface. The spring is

stretched a distance L2 beyond its natural length and released from rest, allowing the block-spring system to oscillate. Frictional forces are considered to be negligible. Which of the following claims is correct about how the period of oscillation for the block-spring system in experiment 2 compares with the period of oscillation for the system in experiment 1, and what evidence supports the claim?
Physics
1 answer:
sineoko [7]3 years ago
7 0

Answer:

the period does not change

Explanation:

In a system of connected spring and mass I was able to oscillate in a simple harmonic motion that is described by

          x = A cos (wt + Ф)

Where A is the amplitude of movement, w the angular velocity and Ф the initial phase.

Angular velocity is given by

         w² = k / m

The angular velocity eta related to frequency

          w = 2π f

Frequency and period are inverses

           f = 1 / T

We substitute

     4π² / T² = k / m

          T = 2π √m/k

As we ask to see the period does not depend on the amplitude, nor on the initial displacement, so the period does not change

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A 58.4-kg person, running horizontally with a velocity of +3.97 m/s, jumps onto a 14.8-kg sled that is initially at rest. (a) Ig
AURORKA [14]

Answer:0.017

Explanation:

Given

mass of person m_1=58.4 kg

mass of sled m_2=14.8 kg

velocity of person v_1=3.97 m/s

let u be the combined velocity of person and sled

conserving momentum

m_1v_1=(m_1+m_2)u

u=\frac{m_1}{m_1+m_2}\times v_1

u=\frac{58.4}{58.4+14.8}\times 3.97

u=3.16 m/s

(b)Total distance traveled by sled and man is 30 m

deceleration Provided by surface is \mu _k\cdot g

where \mu _k is coefficient of kinetic friction

using v^2-u^2=2as

0-3.16^2=2(-\mu _k\cdot 9.8)\cdot 30

\mu _k=0.0169

6 0
3 years ago
"A capacitor charged to 1.5 V stores 2.0 mJ of energy. Determine the energy stored in the capacitor if it is charged to 3.0 V."
Salsk061 [2.6K]

To solve this problem we will apply the concepts related to electric potential energy. This relationship shows us that energy is equivalent to half the product between the capacitance of the body by the squared voltage. Mathematically it can be expressed as,

E = \frac{1}{2} CV^2

Here,

C = Capacitance

V = Voltage

E = Energy

The initial capacitance would then be given by

2mJ = \frac{1}{2} C (1.5)^2

C = \frac{4*10^{-3}}{(1.5)^2}

C = 1.78*10^{-3}F

Energy stored in the capacitor with 3V is

E = \frac{1}{2} (1.78*10^{-3})(3)^2

E = 8mJ

Therefore the energy stored in the capacitor if it is charged to 3V is 8mJ

8 0
3 years ago
What should not be used to support a scaffold because they could collapse, sending the structure to the ground?
uranmaximum [27]

Answer:

Cinder blocks

Explanation:

From safety training guides, whenever there is inadequate support, poor

construction, or a movement in the components of the scaffold such as the coupler as well as the base upon which the scaffold structure is built, there will be a great danger of collapse.

In light of this safety rule, Cinder blocks such as sandcrete blocks, bricks e.t.c shouldn't be used to support scaffold because they have a high tendency of being crushed under load

5 0
3 years ago
A 2.35-m-long wire having a mass of 0.100 kg is fixed at both ends. The tension in the wire is maintained at 22.0 N.
ahrayia [7]

Length of wire (L)=2.35m

Mass of wire (m)=0.100kg(m)=0.100kg

Tension in the wire (T)=0.042m

<h3>What is tension?</h3>

Any physical object that is in contact with another one can apply forces to that item. Depending on the sorts of objects in touch, we label these contact forces differently. We refer to the force as tension if a rope, string, chain, or cable is one of the things applying the force.

Ropes and cables can effectively convey a force over a long distance, making them valuable for exerting forces (e.g. the length of the rope). For instance, a team of Siberian Huskies can pull a sled by attaching ropes to them, allowing the dogs to move more freely than if they had to push against the sled's rear surface with their typical effort.

learn more about tension refer:

brainly.com/question/23560853

#SPJ4

8 0
2 years ago
How might scientists study something that they cannot observe directly?
yarga [219]

Answer:

The sun

Explanation:

if they get too close even the heat that radiates of of it would burn you or give sunburn bad and the sun is a shining ball of energy it is way to hot for a human to get close

8 0
3 years ago
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