Tim, with mass 53.5 kg, climbs a gymnasiumrope a distance of 4.7 m.
The acceleration of gravity is 9.8 m/s2 .
How much potential energy does Tim gain?
Answer in units of J

Answers

Answer 1

Answer: Potential energy = mgh

= 53.5 x 9.8 x 4.7

= 2464.21 Joules

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Which one of the following temperatures is equal to 5°C? A. 465 K
B. 0 K
C. 41 K
D. 278 K

Answers

Answer : The correct option is, (D) 278 K

Explanation :

We are given temperature $5^oC$ .

Now the conversion factor used for the temperature is,

$K=^oC+273$

where, K is kelvin and $^oC$ is Celsius.

Now put the value of temperature, we get

$K=5^oC+273=278K$

Therefore, the temperature 278 K is equal to the $5^oC$

Density is calculated by dividing the mass of an object by its volume. Please select the best answer from the choices provided T F

Answers

From among the choices suggested, the better answer is the letter ' T ' ...
the letter that can call to mind the words 'tactful', 'tested', 'tasteful', triumphant',
and 'true', depending on the context.

The description of 'density' in the first sentence is a good and correct one.

Explain at least two differences between justice system laws and scientific laws.

Answers

The adversarial system is rigid – the roles are proscribed – the prosecutor wants to convict, the defendant wants a decision of not guilty. They are not just allowed but expected to bias their presentation, trusting the truth to come out between the adversaries. Science certainly has its sides of partisanship and bias. But these sides are self-imposed and can be abandoned at any time. While a prosecutor should not lie or hide evidence, and should drop a case if they become convinced the defendant is innocent, they wake up in the morning with no choice about which side of the argument they will come down on. In the criminal justice system the advocates are rigidly fixed in their roles and the jurors are rigidly neutral (the process to find a random neutral jury took as long as the trial itself). In science, the advocates are the same people as the jurors. And as a result they have to be willing to be flexible and change their minds. A good scientist shouldn’t have a pre-determined rigid answer to a question.
Lack of investigation – we jurors were told over and over not to investigate the situation ourselves. We were to make our decision only on the basis of the evidence presented to us. I can tell you in the case I was on there were at least two whopping big questions hanging over the case that nearly every juror in the room identified as very important but not addressed by either lawyer. Either one of them (whether the defendant’s schedule allowed time to drink before being stopped in the car, whether a particular medical condition could affect breathalyzer tests) could have changed the outcome. We could have answered one of these with 10 minutes on google and the other with some very simple subpoena of records. But we couldn’t use any of this. Scientists obviously are the opposite – if they need more information, they are expected to go get it before making an opinion.
Reliance on personal testimony – although science and trials share a focus on evidence, trials recognize testimony of individual people under oath as a major form of evidence. They certainly acknowledge the possibility of lying and explicitly instruct jurors to decide what testimony they believe. My case was unusual in that there was so much video footage, but still a majority of the case came down to testimony by the police officers, and most cases even a few years ago would have had only testimony. Science on the other hand, doesn’t accept testimony. Or does it? What else is the methods and results section of a paper? I’m on the fence whether science is so different on this one.

What is the importance of the ozone layer?

Answers

Importanceofozonelayer:

The ozone shields the surface of the earth from ultraviolet UV radiation from the sun.
These radiations are highly damaging as they can cause cancer in both plants and animals, damage to eyes and immune system.
They can also lead to variations in global rainfall, ecological disturbances and dwingling of global food suppliers.

Explanation:

Formationofozonelayer:ozone at the higher level of the atmosphere is a product of UV radiations acting on oxygen O2 molecule. The higher energy UV radiations split apart some molecular oxygen( O2) into free oxygen (O) atoms.

Depletionodozonelayer:The amount of ozone in the atmosphere began to drop sharply in the 1980's . This decrease has been linked to synthetic chemicals like cholorofluorocarbons ( CFC's ) which are used as refrigerants and in fire extinguishers.

to protect us from the harmful UV rays from the sun so we don't become human bacon

At a certain location, the earth's magnetic field has a magnitude of 5.7×10−5 t and points in a direction that is 73 ∘ below the horizontal. part a find the magnitude of the magnetic flux through the top of a desk at this location that measures 81 cm by 85 cm

Answers

Answer:

1.15 * 10^(-5) Tm²

Explanation:

Parameters given:

Magnitude of magnetic field, B = 5.7 * 10^(-5) T

Angle of magnetic field to the horizontal plane = 73°

Dimension of the desk = 81 cm × 85 cm

Area of desk, A = 6885 cm² = 0.6885 m²

The magnitude of the Magnetic Flux, |Φ|, is given as:

|Φ| = |B * A * cosθ|

Where θ = angle of the Magnetic field to the normal of the desk = 90 - 73 = 17°

Therefore, the magnitude of the Magnetic Flux will be:

|Φ| = |5.7 * 10^(-5) * 0.6885 * cos17|

|Φ| = 3.75 * 10^(-5) Tm²

When the magnitude of the magnetic flux through the top of a desk at this location is = $1.15 * 10\wedge (-5) Tm2$

Calculate of Parameters

Parameters as per the question given:

Then The Magnitude of the magnetic field, $B = 5.7 * 10\wedge (-5) T$

Then, The Angle of the magnetic field to the horizontalplane = 73°

After that, The Dimension of the desk = is 81 cm × 85 cm

Now, The Area of desk, A = 6885 cm² = 0.6885 m²

When The magnitude of the Magnetic Flux, |Φ|, is given as:

Then, |Φ| = |B * A * cosθ|

Where θ is = angle of the Magnetic field to the normal of the desk = 90 - 73 = 17°

Thus, the magnitude of the Magnetic Flux will be:

|Φ| = $|5.7 * 10\wedge (-5) * 0.6885 * cos17|$

|Φ| = $3.75 * 10\wedge (-5) Tm²$

Find more information about Parameters here:

brainly.com/question/20706745

A car is moving in uniform circular motion. If the car's speed were to double to keep the car moving with the same radius, the acceleration wouldincrease by a factor of 2
increase by a factor of 4
decrease by a factor of 2
decrease by a factor of 4