Data is information from which conclusions can be drawn.. . True. False

Answers

Answer 1

Answer: That statement is True.

Data will show you the element that you need to draw conclusion of your study/experiment.
For example, if after you gather the the data from 100 heart patient and 70 percent of them are obese, you can draw a conclusion that obesity is linked with heart disease

hope this helps

Answer 2

Answer: you can draw conclusions from data, so it would be true

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What is the formula for force?a. Force = mass * velocity
b. Force = mass * acceleration
c. Force = mass / acceleration
d. Force = acceleration / mass

Answers

Choice 'b' is one possible way to state
Newton's second law of motion.

The other choices are meaningless.

Answer:

Explanation:

F=mass x acceleration

A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3.0 ms. (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred

Answers

Answer:

(a) 300 W

(b)0.90 J

Explanation:

(a) The electric power for any circuit element is given as

$P=IV$

Here I is current passing in the circuit and V is the voltage.

Given I = 12 A and V =25 V.

Substitute the given values, we get

$P=12 A *25 V$

P = 300 W.

Thus, the power defibrillator deliver to the body is 300 W.

(b) To calculate the electric energy use the relation between electric energy, power and time as

$E=Pt$

Given t = 3 ms.

Substitute the values, we get

$E=300 W* 3* 10^-^3s$

E = 0.90 J.

Thus, the energy transferred is 0.90 J.

A hollow plastic sphere is held below the surface of a fresh-water lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.650 cubic meters and the tension in the cord is 900 N. a) Calculate the buoyant force exerted by the water on the sphere. b) what is the mass of the sphere? c) the cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?

Answers

Answer: a) B = 6811N

b) m = 603.2kg

c) 86.8%

Explanation: Buoyant force is a force a fluid exerts on a submerged object.

It can be calculated as:

$B=\rho_(fluid).V_(obj).g$

where:

$\rho_(fluid)$ is density of the fluid the object is in;

$V_(obj)$ is volume of the object;

g is acceleration due to gravity, is constant and equals 9.8m/s²

a) For the hollow plastic sphere, density of water is 1000kg/m³:

$B=10^(3).0.695.9.8$

B = 6811N

b) Anchored to the bottom, the forces acting on the sphere are Buoyant, Tension and Force due to gravity:

B = T + $F_(g)$

B = T + mg

mg = B - T

$m=(B - T)/(g)$

Calculating:

$m=(6811 - 900)/(9.8)$

m = 603.2kg

c) When the shpere comes to rest on the surface of the water, there are only buoyantandgravity acting on it:

B = m.g

$\rho_(w).V_(sub).g=m.g$

$V_(sub)=(m)/(\rho_(w))$

$V_(sub)=(603.2)/(1000)$

$V_(sub)$ = 0.6032m³

Fraction of the submerged volume is:

$(V_(sub))/(V_(obj))$ = $(0.6932)/(0.695)$ = 0.868

Final answer:

We use the principles of buoyancy and Archimedes' principle to calculate the buoyant force, the mass of the sphere, and the fraction of volume submerged when the cord breaks. The buoyant force equals the weight of water displaced by the sphere, we will find this by calculating the difference between the weight of the sphere in air and its weight when submerged in water. The sphere's mass can be found using its volume and the density of plastic, whilst the fraction of volume volume submerged when the cord breaks will be such that the weight of water displaced equals the weight of the sphere.

Explanation:

To answer these questions, we will apply the principles of buoyancy and Archimedes' principle. Archimedes' principle states that the buoyant force on an object is equal to the weight of fluid displaced by the object. Buoyant force is hence the difference between the weight of the object in air and its weight when submerged in water.

(a) Calculating the buoyant force:

The total force acting on the sphere when it is submerged is the sum of the weight of the sphere (i.e., mass of sphere times the gravitational acceleration) and the tension in the cord. Since the sphere is at equilibrium, this total force equals the buoyant force exerted by the water. We can calculate the weight of the sphere in water as the weight of the sphere (mass x gravity) less the tension in the cord (900N).

(b) Calculating the mass of the sphere:

We can calculate the mass of the sphere by using the volume of the sphere and its density (which is the mass divided by the volume). Since the sphere is of plastic, we can look up or be provided the density of plastic to plug in here.

(c) Determining the fraction of volume submerged when the cord breaks:

When the cord breaks, the sphere will rise until the buoyant force and the weight of the sphere balance out. This happens when the amount of water displaced weighs the same as the sphere. The fraction of the sphere's volume that needs to be submerged to displace an amount of water with the same weight as the sphere will give the fraction of the spherical volume submerged.

Learn more about Buoyant Force here:

brainly.com/question/20165763

#SPJ11

What would be the meaning of a nonzero y intercept to a graph of total mass versus volume?

Answers

It would imply the object has some volume but 0 mass which isn't possible. Negligible masses with volumes can be considered however absolutely 0 mass really means the object doesn't exist at all. Thus, showing the graph is wrong.

The largest building in the world by volume is the Boeing 747 plant in Everett, Washington. It measures approximately 634 m long, 710 yards wide, and 109 ft high. volume in feet^3

Answers

So to get the volume, you're going to multiply all three together, but you have to make all the units the same first. The answer wants ft³, so you want to convert them all to feet.height = 109 ft, so that's fine already. Awesome.width = 710 yd, but that's an easy conversion to feet. Three feet equal one yard, so just multiply (710 yd) by (3 ft/1 yd) and that'll give you the width in ft.length = 634 mThis one is a little tricker, but same principle. First convert meters to centimeters, like this: (634 m)(100 cm/1 m). Then take that number in cm and convert it into inches, knowing that 1 inch = 2.54 centimeters. So multiply the inches you have by (1 in/2.54 cm). Then you'll change that number into feet by dividing it by twelve, since there are twelve inches in each foot.Now you have all three measurements in feet. Just multiply them together to get the volume in ft³ and you're good to go! :)

The volume = (length) x (width) x (height) .

But before we can do the multiplication, all three dimensions
have to be in the same unit.

The question is asking for the answer in cubic feet, and one of
the dimensions is already in feet. So let's change the other two
dimensions to feet.

Length:
1 meter = 3.28 feet
634 meters = (634 x 3.28) feet

Width:
1 yard = 3 feet
710 yards = (710 x 3) feet

Height:
109 feet

Volume =   (length)      x      (width)       x   (height)

   = (634 x 3.28 ft) x (710 x 3 ft) x (109 ft)

   = 48,292,580 cubic feet .

In ultrasound physics, which of the following is improved by increasing packet size ?

Answers

You're going to have to give me the choices.
I'm pretty sketchy on that subject.

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