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3 years ago

A sample of a solid nonmetal is compared to a sample of a solid metal. Both samples have the same volume. What is

Physics

2 answers:

stealth61 [152]3 years ago

4 0

Answer:

i think the answer is The nonmetal takes up more space.

Explanation:

i hope this helps

Hoochie [10]3 years ago

3 0

Answer:

Ok I’m not pretty sure but I think it’s C but look for more answers first before you put C because I don’t want you to get it wrong. :)

Explanation:

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If the car passes point A with a speed of 20 m/s and begins to increase its speed at a constant rate of at = 0.5 m/s2 , determin

IceJOKER [234]

Answer:

$1.68 \frac{m}{s^2}$

Explanation:

Please find the image for the question as attached file.

Solution -

Given -

First of all we will calculate the velocity at point C,

As per newton's third law of motion-

$V_C^2 = V_A^2 + 2 a_t (S_C - S_A)\\$

Substituting the given values in above equation, we get -

$V_C^2 = 20^2 + 2*0.5*(100-0)\\V_C = 22.361 \frac{m}{s}$

Now we will determine the radius of curvature for the curve shown in the attached image

$Y = 16 - \frac{1}{625} X^2\\$

Differentiating on both the sides, we get -

$\frac{dy}{dx} = -3.2 (10^-3) X\\\frac{d^2y}{d^2x} = -3.2 (10^-3)\\Curve = \frac{[1+(\frac{dy}{dx})^2]^{\frac{3}{2}} }{\frac{d^2y}{d^2x}} \\Curve = 312.5$ meter

Acceleration on curved path

$a = \frac{V_C^2}{Curve} \\a = \frac{22.361^2}{312.5} \\a= 1.60 \frac{m}{s^2}$

Final acceleration

$a_f = \sqrt{0.5^2 + 1.6^2} \\a_f = 1.68\frac{m}{s^2}$

5 0

3 years ago

what is the average acceleration of a four wheeler that speeds up from 3 miles per hour to 15 miles per hour in 0.6 hours

den301095 [7]

A= change in velocity / change in time

$a = \frac{change \: in \: velocity}{change \: in \: time}$
$a = \frac{15 - 3}{0.6}$
$a = 20 \: \frac{m}{ {s}^{2} }$

6 0

4 years ago

What is the current through an electric heater with a resistance of 38  when the potential difference is 240 V?

Zinaida [17]

$\bf{ \underline{Given:- }}$

$\sf• \: Resistance \: (R) \: = 38 \: Ω$

$• \sf \: Potential \: difference \: (V) \: = 240 \: v$

$\bf{ \underline{To \: Find:- }}$

$• \sf \: The \: current \: through \: an \: electric \: heater.$

<h2> $\bf{ \underline{ Solution :-}}$ </h2>

$\bf \red{•\: The \: formula \: of \: Current \: (I) = \frac{V}{R}}$

$\sf \rightarrow I = \frac{240}{38}$

$\sf \rightarrow I = 6.32$

$\sf \pink{Answer :- \: The \: current \: through \: an \: electric \: heater \: is \: 6.32 \: A.}$

6 0

3 years ago

How many miles will a car drive on 25 L of gasoline if the car average mileage is 60 km/gal. provide answer with correct signifi

Hunter-Best [27]

Answer:

Distance traveled by car in 25 L IS 396.15 km

Explanation:

We have given average millage of car = 60 km /gal

Means car travel 60 km in 1 gallon

The amount of gasoline = 25 L

We know that 1 L = 0.2641 gallon

So $25L=25\times 0.2641=6.6025gallon$

As the car travels 60 km in 1 gallon

So traveled distance by car in 6.6025 gallon of gasoline = 60×6.6025 = 396.15 km

4 0

3 years ago

Question 4 of 10

uysha [10]

Answer:

Determining how data will be gathered

Explanation:

As a scientist considers the use of a particular set of experimental procedures to carry out his research, an important consideration is the method of data collection.

The experimental procedures chosen must be those that make the process of data collection much easier, efficient and lead to collection of reliable data.

Hence determining the method of data collection is very important when designing a set of experimental procedures.

8 0

3 years ago