PHYSICS HIGH SCHOOL

Which one of the following types of electromagnetic radiation causes certain substances to fluoresce?A. Cosmic rays
B. Infrared waves
C. X rays
D. Ultraviolet rays

Answers

Answer 1

Answer: The answer is D. Uv causes more stuff to fouresce

Answer 2

Answer:

Answer:

D. Ultraviolet rays

Explanation:

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A rock falls off the edge of a cliff and strikes the ground after 3.8 s. What is the height of the cliff? Assume air resistance is negligible.
A toy mouse has a mass of 4 kg and kinetic energy of 32 J. What is its speed? A. 6 m/s B. 3 m/s C. 5 m/s D. 4 m/s
High intensity sounds are perceived as relatively loud sounds. The sound waves which are most intense and perceived as loud sounds are those which have a ______ . Identify the one characteristic which is unique of such sound waves.

What is a major goal of the federal government when managing land resources?

Answers

One of its main objectives is to support the implementation of an efficient land utilization system based on such a Land Resources ManagementSystem (LRMS) and a Geographical Information System (LIS) in order to introduce a digital land reform system.

Afforestation, good grazing and canal maintenance, control of pesticides and agricultural runoff, and correct use of wasteland and fallow land are procedures and measurement that should be implemented to safeguard land resources.

Conservation of Soil and Water in All Places

Terracing and reclaiming, erosion prevention, pumping stations and conservation, tree plantations, the growth of cash and horticultural crops, watershed management projects, the construction of agricultural ponds, and environmental protection projects in urban areas are only a few of the tasks undertaken underneath this scheme.

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How long will it take a car to accelerate from 15.2 to 23.5 m/s if the car has an average acceleration of 3.2 m/s?

Answers

It will take a car, 2.59 s to accelerate from 15.2 to 23.5 m/s.

What is Speed?

speed is described as. the pace at which an object's location changes in any direction. Speed is defined as the distance traveled divided by the travel time. Speed is a scalar quantity because it just has a direction and no magnitude.

Given, the car has an average acceleration of 3.2 m/s².

To solve this problem, we can use the following kinematic equation:

v = u +at

where:

v is the final velocity (23.5 m/s)

u is the initial velocity (15.2 m/s)

a is the acceleration (3.2 m/s^2)

t is the time

We can rearrange this equation to solve for t:

t = (v -u)/a

substituting the values we have:

t = (23.5 - 15.2 ) / 3.2

t = 2.59375 seconds

Therefore, it will take approximately 2.59 seconds for the car to accelerate from 15.2 m/s to 23.5 m/s with an average acceleration of 3.2 m/s².

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Hello!

How long will it take a car to accelerate from 15.2 m/s to 23.5 m/s if the car has an average acceleration of 3.2 m/s² ?

We have the following data:

Vf (final velocity) = 23.5 m/s

Vi (initial velocity) = 15.2 m/s

ΔV (speed interval) = Vf - Vi → ΔV = 23.5 - 15.2 → ΔV = 8.3 m/s

ΔT (time interval) = ? (in s)

a (average acceleration) = 3.2 m/s²

Formula:

$a = \frac{\Delta{V}}{\Delta{T^}}$

Solving:

$a = \frac{\Delta{V}}{\Delta{T^}}$

$3.2 = \frac{8.3}{\Delta{T^}}$

$\Delta{T^} = (8.3)/(3.2)$

$\Delta{T^} = 2.59375 \to \boxed{\boxed{\Delta{T^} \approx 2.6\:s}}\:\:\:\:\:\:\bf\green{\checkmark}$

Answer:

The car will take approximately 2.6 seconds to accelerate

____________________________________

I Hope this helps, greetings ... Dexteright02! =)

Calculate the man’s mass. (Use PE = m × g × h, where g = 9.8 N/kg.)A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about
kilograms

Answers

Answer:

mass=56.12kg

Explanation:

PE=mgh

4620=m×9.8×8.4

make msubject of the formula...

m =4620/(9.8×8.4)

m=4620/82.32

m=56.12kg

Most of the circuits in your home area. parallel circuits.
b. switch circuits.
c. series circuits.
d. reversible circuits.

Answers

The correct answer to the question is: A) Parallel circuits.

EXPLANATION:

There are normally two types connection of circuit elements which are preferred for connection of electrical appliances.

Most of the circuits in home are connected to each other in a parallel way.

We know that the potential remains constant at every circuit elements for parallel connection. The potential drop across each circuit element will be different for series connection.

Due to the parallel connection, each circuit elements can be switched on or off separately.

Hence, most of the electrical circuits in home are connected in parallel way.

Option (a) is correct. The most of the circuits at home are the parallel circuits.

Further Explanation:

The normal wiring in the electrical appliances used in the household circuits are either done in series circuit or in a parallel circuit.

A series circuit is a circuit in which all the alliances are connected to one another in a linear manner. In series circuit, the current flowing through all the elements in a circuit remains the same but the voltage drop changes.

A parallel circuit is a circuit in which all the appliances are connected across the voltage source and therefore, the voltage drop across all the appliances remains the same.

The switching circuit and the reversible circuits are the circuits which make use of the several sensors and electronic adapters to control the circuit.

The parallel circuits are more advantageous over the other circuits because if any fault occurs in any one of the instrument or appliance, the whole circuit is not affected due to this. The rest of the circuit continues to work without any issue.

Thus, Option (a) is correct. The most of the circuits at home are the parallel circuits.

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2. If a current of 2.4 a is flowing in a cylindrical wire of diameter 2.0 mm, what is the average current density in this wire brainly.com/question/10597501

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Answer Details:

Grade: High School

Subject: Physics

Chapter: Electrical circuits

Keywords:

Parallel circuits, switch circuits, reversible circuits, series circuit, most of the circuits, household circuit, appliances, fault, not affected, current remains same, voltage drop across.

A truck crossing a bridge causes the bridge to vibrate. The bridge ceases to vibrate after the truck crosses. This is an example of _____.

Answers

an example of forced vibrations

Suppose the mass of a certain liquid is 35 g. You place it in a beaker that has a mass of 75 g. What is the mass of the liquid? plz help.

Answers

If you are looking for the mass of the liquid with the beaker, you just have to add the beaker mass and liquid mass

35+75= 110 g

Final answer:

The mass of the liquid remains at 35 g regardless of its location or what it's placed inside.

Explanation:

The mass of a liquid is simply the amount of matter it contains, and it does not change regardless of where or in what you place it. So, if the mass of a certain liquid is given as 35 g, this mass value remains unchanged whether you place it in a beaker, cup, or any other container. Therefore, the mass of the liquid in the beaker is still 35 g, and the mass of the beaker doesn't affect it.