A pumkin is dropped, after 5 seconds, its velocity is 47 m/s. What is its acceleration?(formula for acceleration: $(final velocity - initial velocity)/(time )$

Answers

Answer 1

Answer: Since the pumpkin is dropped, that means it is in freefall and is accelerating at the acceleration due to gravity. The acceleration due to gravity is 9.81m/s down.

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Cecil is working with samples of chlorine (Cl), oxygen (O), bromine (Br), and silver (Ag). The samples are all at room temperature. Which substance is most likely the most dense?chlorine
oxygen
bromine
silver

Answers

Answer: Option (d) is the correct answer.

Explanation:

As it is known that density is the amount of mass divided by the volume.

Mathematically, Density = $(mass)/(volume)$

Since, mass is directly proportional to density. Hence, more is the mass of an object more will be its density.

At room temperature chlorine exists as a gas and its molar mass is 35 g/mol.

At room temperature oxygen exists as a gas and its molar mass is 32 g/mol.

At room temperature bromine exists as a liquid and its molar mass is 80 g/mol.

At room temperature silver exists as a solid and its molar mass is 108 g/mol.

As the mass of silver is greater and it exists as a solid at room temperature. Hence, it will be most dense in nature.

Therefore, we can conclude that out of the given options silver substance is most likely the most dense.

The answer is silver. Silver is the most dense, it's a solid so it is more compact and is obviously the most likely to have more mass to it.

The period of a 261 Hertz sound wave is

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That would be the result of 1/261

Galileo conducted controlled experiments to find out if the mass of the pendulum bob affected the period of the swing. Write a description of how he might design his experiment. Thanks!

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According to my guesses, he should have swung the pendulam bob and noted its time period. In order to observe the effect of mass, he would have repeated the experiment with varied pendulam bobs. Hope this helped!

A student pushes a 40-N block across the floor for a distance of 10 m. How much work was done to move the block? Question 3 options: 4 J 40 J 400 J 4,000 J

Answers

Answer:

The work done to move the block is 400 Joules.

Explanation:

It is given that,

Force acting on the block, F = 40 N

The distance covered by the block, d = 10 m

We need to find the work done by the block. The work done by an object is given by :

$W=F* d$

$W=40\ N* 10\ m$

W = 400 Joules

So, the work done to move the block is 400 Joules. Hence, the correct option is (B) "400 J".

40x10=400 J

Work = Force x distance

The horizontal sweep of an oscilloscope is rated in

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Seconds/Division

An oscilloscope measures time-varying waveform. Electrical input signal is concerted into detectable trace on a screen by converting electricity into light. Time period is plotted along the x -axis as the horizontal component. The center vertical line (y-axis) represents the voltage.

How is a positive charge usually given to a neutral object?

Answers

the answer is 1) neutrons are added to the object.

The answer is #1 thank if it gelp

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A square block of steel with volume 10 cm3 and mass of 75 g is cut precisely in half. The density of the two smaller pieces is now...a. the same as the original density. b. one-half the original density. c. two times the original density. d. one-fourth the original density.

If the speedometer on a car indicates a constant speed, can you be sure the car is not accelerating? Explain

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