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olga55 [171]
3 years ago
15

If a spring stores 5 j of energy when its compressed by 0.5 m. what is the spring constant

Physics
2 answers:
svp [43]3 years ago
7 0
<h2>Answer:</h2>

Spring constant = k = 10 N/m

<h3>Explanation:</h3>

According to Hooke's law:

                                         F = kx.

  • F = The force applied to the spring in newtons (N).
  • k = The spring constant measured in newtons per meter (N/m).
  • x = The distance the spring is stretched from its equilibrium position in meters (m).

                                            k = F/x

Putting values in above formula:

                                            k = 5/0.5

                                             k = 10 N/m


aliya0001 [1]3 years ago
3 0

The elastic potential energy stored in a spring is given by:

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

where k is the spring constant, and x=0.5 is the compression of the spring. Re-arranging the formula and using E=5 J, we find the spring constant:

k=\frac{2E}{x^2}=\frac{2(5 J)}{(0.5 m)^2}=40 N/m

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Anna11 [10]

Answer:

Explanation:

1. DECOY PRICING

This occurs when customers make a purchase they must often choose between products with different prices and attributes.

This method of pricing is meant to influence the consumer's purchasing decision and maximise the sales of one particular product. The seller will offer at least three products; two of the products will have a similar or equal price. The two products with the similar prices should be the most expensive ones, and one of the two should be less attractive than the other.

2. LOSS LEADER

This is when a product is sold at a low price (often without profit) in order to stimulate other profitable sales or to attract new customers.

The main is that it will help the business to expand their market share as a whole. It's common practice when first entering a market as it introduces new customers to a service or product in the hope of building a customer base and securing future

3.ODD PRICING

This is a method of psychological pricing a product. Prices ending in 9, 95, 97, 99 are sometimes called “charm prices” and in this type of pricing, the seller fixes a price where the last digits are odd numbers. This is intended to give the buyer no room for manœuvering or for bargaining as the price appears to be less - a product priced at £9.99 will seems much cheaper than one priced at £10.00

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4 0
3 years ago
A particle's position along the x-axis is described by: x(t)=A t + B t​2
ki77a [65]

Answer:

a)V = 25.1 m/s

b)V = 4.226 m/s

Explanation:

Given that

x(t)=A t + B t​²

A = -4.3 m/s

B = 4.9 m/s​²

x(t)=  - 4.3 t +4.9 t​²

The velocity of the particle is given as

V=\dfrac{dx}{dt}

V=-4.3 + 4.9 x 2 t

V= - 4.3 + 9.8  t m/s

Velocity at point t= 3 s

V= - 4. 3 + 9.8 x 3 m/s

V= - 4.3 + 29 .4 m/s

V = 25.1 m/s

At origin :

x= 0 m

0 =  - 4.3 t +4.9 t​²

0 = - 4.3 + 4.9 t

t=\dfrac{4.3}{4.9}\ s

t=0.87 s

The velocity at t= 0.87 s

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V= - 4. 3 + 9.8 x 0.87 m/s

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V = 4.226 m/s

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3 years ago
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matrenka [14]

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The part of the light that continues on into the new medium is <em>transmitted</em>
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Its direction usually changes as it crosses the boundary.  The bending is <em>
refraction</em>
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The part of the light that bounces away from the boundary and heads back
into the first medium is <em>reflected</em> light.  The process of bouncing is <em>reflection</em>.


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Explanation:

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