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3 years ago

A change in position with respect to a reference point is called?

Physics

1 answer:

kumpel [21]3 years ago

4 0

A change in position with respect to a reference point is called motion

hope it helps...

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A shopping cart is pushed and released,

Wewaii [24]

The magnitude of the friction on the cart is 28,56 N

To measure the deceleration of a car, without the value of the time of the movement, the <u>Torricelli equation</u> is used, which consists of:

${v_{f}}^{2}={v_{o}}^{2}+2a\Delta s$

Where is final velocity, is initial velocity, is acceleration, and is displacement.

Now, substitute the values in the formula:

$0^{2} = (3.5)^{2} + 2a6$

$0 = 12.25 + 12a$

$a = -\frac{12.25}{12}$

$a = -1.02$

Finally, the value of the acceleration found is multiplied by the mass of the object, thus measuring the friction force:

$F = 28\times-1.02$

$F = -28.56 N$

Learn more about friction force at: brainly.com/question/13707283

5 0

3 years ago

A sphere of mass 40kg is attaracted by a second sphere of mass 15 kg when their centers are 20 cm apart with a force of 0.1mg-wt

ser-zykov [4K]

<span>gravitational force = 0.1 mg-wt. = 0.1 * 10^-6 * 9.8 N = Gm1m2/r^2
m1 = 40 kg m2 =15 kg and r = 0.2 m
Put in and find G</span>

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3 years ago

For the chemical reaction C2H6 --> C2H4 + H2 + 137kJ, the chemical energy of the A. reactant and the chemical energy of the p

Goryan [66]

Answer: The chemical energy of reactants is greater than the chemical energy of products.

Explanation: In the given reaction

$C_2H_6\rightarrow C_2H_4 + H_2 +137 kJ$

It can be seen that the energy has been released. Thus we can say that reactants have converted to products by release of energy. Thus energy of products is less as compared to energy of reactants as some of the energy has been released.

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3 years ago

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Express 1010 miners in examiners. Answer in units of Eminer.

Lady_Fox [76]

Since 1 examiner = 10^18miner
then 10^10miners =10^(10-18)=10^-8examiner

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3 years ago

although psychologists provide several different services during therapy a counseling psychologist differs from a clinical psych

torisob [31]

One is just for counseling and the other is clinical. I'm sure that with a clinical psychologist you HAVE to see them as a counseling psychologist, you can choose to see them.
i hope i helped

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4 years ago

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