A block is released from rest and slides down a ramp. The surface of the ramp has three rough sections where the friction between the surface and the block is not negligible, as shown by the shaded regions above. Measuring which of the following will allow for the best estimate of the block’s instantaneous acceleration when the block is at the midpoint of the ramp?

Answers

Answer 1

The speed of the block at points just before and just after the midpoint and the time its takes the block to travel between them.

What is acceleration ?

The rate at which speed and direction of movement change over time is referred to as acceleration. When something moves faster or slower, it is said to be accelerating. Motion on a circle increases even while the speed is constant because the vector is always changing.

What is an object's acceleration?

According to Newton's second law of motion, an object's acceleration is equal to the net force applied to it divided by its mass, or a = F m. Given an object's mass and the net pressure exerted on it, one can use this acceleration equation to calculate its acceleration.

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Related Questions

4. Which is a NOT a unit for speed? (4 points)
1.cm/min
2.km/h
3.m/s
4.km

Answers

4 is not because it is for distance and 1 is not correct because it is supposed to be in seconds not minutes

Two ideal gases, a and b, are at the same temperature. if the molecular mass of the molecules in gas a is twice that of the molecules in gas b, the molecules' root-mean-square speed is?

Answers

The molecules' root-mean-square speed is R = 8.31 J/(mole⋅ K)

Thermal Motion:

Molecules in any object are in constant motion, the speed of that motion being defined by the temperature of the thing . just in case of ideal gases, the speed of motion is that the function of the temperature and the molar mass of the gas only.

Evaluation :

The root mean square speed of the molecules in the gas is given by: vrms =√3 RT/M

Here,

T is the temperature of the gas;

R = 8.31 J/(mole⋅ K) is the universal gas constant;

M is the molar mass of the gas;

Since the molecular mass of the gas A is twice as large and therefore the speed is inversely proportional to the square root of the molar mass, the speed of molecules in B is bigger by the factor √2 ≈ 1.4

What is molar mass?

The molar mass (symbol M, SI unit kg·mol−1) is defined because the mass per unit amount of substance of a given chemical entity. keep with the definition of the mole, the chemical entity in question should be specified

What is molar mass and mole?

The molar mass of a substance is defined because the mass of 1 mol of that substance, expressed in grams per mole, and is adequate to the mass of 6.022 × 10²³ atoms, molecules, or formula units of that substance

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Which student's plate is following the MyPlate recommendations?
Ashley has toast, a bowl of cereal, a granola bar, and a glass of juice.
Brian has pasta, a green salad, grilled chicken, and a glass of milk.
Kendra has yogurt, ice cream, an apple, and a glass of milk.
Megan has cookies, carrots, a piece of cake, and soda.

Answers

Brian is following the MyPlate recommendations because he has pasta, a green salad, grilled chicken, and a glass of milk.

Fruits and vegetables should take up half of the plate, according to MyPlate. The two basic categories of grains are whole grains and processed grains.Fruits, vegetables, grains, proteins, and dairy make up the bulk of the MyPlate dietary groups. Apples, grapes, oranges, berries, carrots, onions, maize, peas, bell peppers, and mushrooms are just a few examples of fruits and vegetables that are low in calories, rich in fiber, and deficient in potassium in the typical American diet. It includes antioxidant phytonutrients in addition to bone-building elements including potassium, calcium, magnesium, vitamin K, and vitamin C.

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Answer:

B) Brian has pasta, a green salad, grilled chicken, and a glass of milk.

Proof:

Certain heavy industrial equipment uses ac power that has a peak voltage of 703 v. what is the rms voltage?

Answers

The RMS voltage of certain heavy industrial equipment is calculated as = 497.09 V . Ac power that has a peak voltage .

Evaluating :

RMS = [tex]\frac{V_{pk} }{\sqrt{2} } = \frac{703}{\sqrt{2} } \\\\[/tex]

= 497.09 V .

Simplification :

As the a c current fluctuates, the typical voltage can be computed in terms of the big voltage as using the following equation. Where v r m s is that the average voltage v. Big is that the peak voltage, so this is often the maximum voltage that can be derived from an a c power, therefore the relationship is p r m s equals v peak over square of 2. as long as the peak voltage is equal to 703 volts, we wish to seek out the v r m s. So we're just visiting divide the pick voltage by spirit of 2, which gives us the r m s of 703 over of 2, and this is often 497 point and the unit is same as the piquant, which is volts. So i hope everything is square.

What is RMS voltage ?

RMS or root mean square current/voltage of the alternating current/voltage represents the d.c. current/voltage that dissipates the identical amount of power as the average power dissipated by the alternating current/voltage. For sinusoidal oscillations, the RMS value equals peak value divided by the root of 2.

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What type of light on the electromagnetic spectrum has the highest energy per photon?.

Answers

Answer:

Gamma rays have the highest energies

Explanation:

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