two cylinders p and q are made of copper the height of p is twice the height of q . the diameter of p is half the diameter of q

Answers

Answer 1

Answer:

Answer:

Explanation:

Cylinder P is taller than cylinder Q. In fact, it's twice as tall. So if cylinder Q is, let's say, 10 inches tall, cylinder P would be 20 inches tall.

Cylinder P is also wider, but not by a lot. It's only half as wide as cylinder Q. So if cylinder Q has a width of 10 inches, cylinder P would have a width of 5 inches.

Now, let's talk about the insides of these cylinders, how much stuff they can hold. If we filled them up with something, like water, the bigger one (cylinder P) can hold twice as much as the smaller one (cylinder Q).

So, cylinder P can hold more stuff because it's both taller and a little wider than cylinder Q.

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A roller coaster cart of mass m = 223 kg starts stationary at point A, where h1 = 26.8 m and a while later is at B, were h2 = 14.7 m. The acceleration of gravity is 9.8 m/s 2 . What is the speed of the cart at B, ignoring the effect of friction?

1. A player kicks a football from ground level with an initial velocity of 22m/s, 35° above the horizontal. Assume that air resistance is negligible. Find the ball’s hang time.a. Find the maximum height of the ball in question 2.

b. Find the ball’s range from question 2.

Answers

Answer:

2.57 s

8.12 m

46.4 m

Explanation:

1. In the y direction:

s = 0 m

u = 22 sin 35° m/s = 12.6 m/s

a = -9.8 m/s²

Find: t

s = ut + ½ at²

0 = (12.6) t + ½ (-9.8) t²

t = 2.57 s

2. In the y direction:

u = 12.6 m/s

v = 0 m/s

a = -9.8 m/s²

Find: s

v² = u² + 2as

0² = (12.6)² + 2 (-9.8) s

s = 8.12 m

3. In the x direction:

u = 22 cos 35° m/s = 18.0 m/s

a = 0 m/s²

t = 2.57 s

Find: s

s = ut + ½ at²

s = (18.0) (2.57) + ½ (0) (2.57)²

s = 46.4 m

the wires inside a cable each have there own plastic insulation .why does the insulasion have diffrent colours

Answers

A cable is a bundle of two wires or three wires or a thousand wires,
inside a single 'tube'. In order for the cable to be useful, you need to
be able to match each wire at one end of the cable to the same wire
at the other end. If each wire has a different physical appearance,
then it's easy.

What are the uses of Electricity in our every day life?

Answers

Calling
Heating Food
Going on the internet
Video Games
Weather
Heating up pools

According to Newton's 2nd law of motion, Jim can throw a _____ farther than a _____. tennis ball, basketball can of soda, liter bottle of soda chair, couch all of the above

Answers

Answer:

All of the above

Explanation:

According to Newton's second law of motion,

$Force = Mass * Acceleration$

If a certain force is applied on objects of different mass, the lighter object will travel farther and faster. All the options in the question have pairs where one object is lighter than other.

So, Jim can throw a tennis ball farther than a basketball. Jim can throw a can of soda farther than a liter bottle of soda and he can throw a chair farther than a couch.

According to Newton's 2nd law of motion, Jim can throw a tennis ball farther than a basketball. The rest of the choices do not answer the question above.

If a certain mass of mercury has a volume of 0.002 m3 at a temperature of 20°C, what will be the volume at 50°C? A. 0.002010812m3
B. 0.004021624m3
C. 0.002021624m3
D. 0.000010812m3

Answers

As per the question the volume of mercury is given as 0.002 m^3 at 20 degree Celsius.

We are asked to calculate the volume of the mercury at 50 degree Celsius.

This problem is based on thermal expansion of matter.

Let us consider the initial and final volume of the mercury is denoted as -

$v_(1) \ and\ v_(2)$

Let the initial and final temperature of the mercury is denoted as -

$T_(1)\ and \ T_(2)$

As per question

$v_(1) =0.002 m^3$ $v_(2) =?$

$T_(1) =20^0 C$ $T_(2) =50^0 C$

The change in temperature is

$T_(2) -T_(1)$

$= 50^0 C -20^0 C$

$= 30^0 C$

Mercury is a fluid.So we have to apply volume expansion of liquid .

The coefficient of of volume expansion of mercury $[ \gamma ]$ at 20 degree Celsius is 0.00018 per centigrade.

As per volume expansion of liquid,

$V_(T) = v_(1) [1 +\gamma [T_(2) -T_(1) ]]$

Here $V_(T)$ is the volume at T degree Celsius.

Hence volume at 50 degree Celsius is calculated as-

$v_(2) =v_(1) [1+\gamma[50-30]]$

$= 0.002[1+0.00018*30]$

$=0.0020108m^3$ [ans]

As per the options given in the question ,option A is close to the calculated value. So option A is right.

The answer to this question lies in understanding the Combined Gas Law in chemistry, which combines Boyle's, Charles', and Gay-Lussac's gas laws. This law shows the relationship between pressure, volume, and temperature of gases and is represented by the equation P1V1/T1 = P2V2/T2. Changes in pressure (P) and volume (V) are directly proportional to one another, but these are inversely proportional to changes in temperature (T). This question must assume that pressure is constant, so the Ps cancel out and the equation becomes V1/T1 = V2/T2. Additionally, temperature should be converted to Kelvins (K) by adding 273 to the temperature in Celsius (so 20 C = 293 K, and 50 C = 323 K). If V1 = 0.002 and T1 = 293 and T2 = 323, then we solve the equation as V2 = T2*V1/T1 or V2 = (323*0.002)/293, so the answer is approximately equal to 0.0022... or answer (C).

Which soil horizon is located closest to the earth's crust? O horizon A horizon B horizon C horizon

Answers

The C horizon because it lays on the hard bedrock of the earths crust.

The soil horizon located closest to the surface of the earth's crust would be the O Horizon, which consists of organic deposits (hence the O) and composting plant structures.
Hope that helped =)

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