Balanced rock has a mass of about 36,000 kg. If the acceleration due to gravity is 9.8m/s^2, what is the force that the rock is exerting in its pedestal
Answer:
Force, F = 352,800 N
Explanation:
Given that,
Mass of the rock, m = 36000 kg
Acceleration due to gravity, [tex]a=9.8\ m/s^2[/tex]
We need to find the force that the rock is exerting in its pedestal. It can be calculated using Newton’s second law of motion as :
F = m × a
[tex]F=36000\times 9.8[/tex]
F = 352,800 Newton
So, the force acting on the rock is 352,800 Newton. Hence, this is the required solution.
If the velocity of a moving object decreases from 60 m/s to 30 m/s, what happens to its momentum?
Hello!
momentum is p=mv so if the velocity is decreased by a factor of 2, which is 1/2 the value, then the momentum of that object will decrease by the same factorial.
Hope this helps, any questions please ask. Thank you!
Qualitatively the momentum is the amount of motion contained in the body.
Quantitatively momentum is the product of mass and velocity of the body.
Mathematically momentum= mass×velocity
i.e p=m×v
where p denotes the momentum.
As per the question the initial velocity of the particle is given as [u]=60 m/s
The final velocity of the particle is given as [v]=30 m/s
Let the mass of the particle is m kg
The initial momentum [tex]p_{1} =m*u[/tex]
=60m kg m/s
the final momentum [tex]p_{2} =m*v[/tex]
=30m kg m/s
Hence the change in momentum is given as -
[tex]p_{2} -p_{1} =[30m -60m] kg m/s[/tex]
= -30m kg m/s
Here the minus sign indicates the loss of momentum
Hence the momentum is decreased by twice as the velocity is decreased by twice.
In general if velocity is decreased by m times ,then the momentum is decreased by m times also.
i'll make u the brainlyist
Which three forms of light are invisible light?
A.blue light
B.infrared rays
C.radio waves
D.red light
E.x-rays
A ski lift is used to transport people from the base of a hill to the top. If the lift leaves the
base at a velocity of 15.5 m/s and arrives at the top with a final velocity of 0 m/s, what is the height of the hill? Round the answer to the nearest tenth.
Answer:
it's actually 12.3 on Edge!
Explanation:
Your brother is insisting that you'll never hear a sound produced behind a barrier wall at the end of your yard. You notice that the door within the wall is open and quickly explain to him that the sound will be able to reach you due to
Sound waves can reach you behind a barrier wall due to the phenomenon of diffraction, which allows them to bend around obstacles and spread into open areas. This is why sounds, unlike light, are still heard through an open door despite a barrier wall obstructing the direct path.
Explanation:The sound will be able to reach you even if it is produced behind a barrier wall as a result of diffraction. This is a wave phenomenon where sound waves bend around obstacles and spread into the space beyond an opening, such as a doorway. Diffraction occurs with waves of all kinds when their wavelengths are comparable to the size of the obstacle or opening they are encountering. Since sound waves have wavelengths that are similar to the size of everyday objects, like doors, they exhibit notable diffraction effects compared to light which has much smaller wavelengths and thus diffracts less.
For example, when someone is playing music in a room, the sound waves travel around and fill the entire space, even through openings like doorways. This can lead to varying sound effects within the room, such as the sound appearing dull in some corners due to destructive interference or standing waves and excessively loud in other areas due to constructive interference. It is the bending or diffraction of sound waves that enables these different acoustic experiences within the room.
Final answer:
Sound waves can diffract around obstacles and reach areas that are not directly in their line of sight. This allows you to hear sound produced behind a barrier wall when the doorway is open.
Explanation:
Sound waves have the ability to bend around obstacles, which allows them to reach areas that are not directly in their line of sight. This phenomenon is known as diffraction.
In the scenario you described, the sound waves produced behind the barrier wall will be able to reach you because they can diffract through the open doorway. The wavelength of sound waves is large enough that it allows them to bend around the edge of the doorway and spread out into the yard.
As a result, you will be able to hear the sound produced behind the barrier wall, even though it is not directly in your line of sight.
how to calculate the total current of a circuit which has both parallel and series connection
What is the difference between States of matter and phases of matter?
Answer:
The States of Matter. States of matter are solids, liquids, gasses, and plasma.
Phases of Matter. A phase of matter is uniform with respect to its physical and chemical properties.
Examples. At room temperature and pressure, the state of a piece of dry ice (carbon dioxide)...
Explanation:
5 A \machine produces compression waves in a spring that is 120 cm long by pulsing twice every second. The back and forth movement of the pulse creates compressed sections of the spring that are 30 cm apart and travel toward the other end of the spring. Which property of the wave does the value of two per second describe? A. wavelength B. intensity C. frequency D. amplitude
Answer:
D. Frequency
Explanation:
The machine produces compression waves in a spring that is 120cm long and it pulse twice every seconds. The property the wave exhibits by exhibiting the value of two per second is the Frequency.
Amplitude of a a wave is the maximum displacement from the equilibrium position. The amplitude of an object is equal to one half the path of the vibration path. The amplitude of a wave is proportional to the amplitude of the source. Amplitude measures how big a wave is . Amplitude of a wave usually look at the energy of a wave so it is not the amplitude .
The frequency of a wave gives the number of wave that passed fixed point at a given time.
What are the features of general adaptation syndrome?
help Guys!!
ON EDGEN: The three steps in the general adaptation syndrome are alarm, resistance, and exhaustion. Alarm is the fight-or-flight response. Your hormones surge, breathing becomes rapid and shallow, glucose is released, your heart rate increases, and your pupils dilate. The second part is resistance, which includes either fighting, where a stressor is taken head on, or flight, where a stressor is avoided. It includes how your body uses stored energy, hormones, minerals, and glucose to react. The final stage is exhaustion, also known as burn out. After prolonged stress, exhaustion kicks in and the ability to manage stress becomes low. At this point, the system of the body can become compromised due to prolonged exposure to the hormones involved with stress.
The features of general adaptation syndrome (GAS) are the Alarm stage, Resistance stage, and Exhaustion stage.
What is general adaptation syndrome?General adaptation syndrome (GAS) is a term coined by Hans Selye, a pioneering researcher in the field of stress, to describe the body's response to stressors.
The general adaptation syndrome consists of three stages:
1. Alarm stage: In this stage, the body recognizes a stressor and responds with the "fight or flight" response. The sympathetic nervous system is activated, which causes an increase in heart rate, respiration, and blood pressure, and a release of stress hormones like adrenaline and cortisol.
2. Resistance stage: If the stressor persists, the body enters the resistance stage. In this stage, the body tries to adapt to the stressor by continuing to release stress hormones and maintain the elevated physiological responses from the alarm stage. The body may also try to repair any damage caused by the stressor during this stage.
3. Exhaustion stage: If the stressor continues for an extended period of time, the body may enter the exhaustion stage. In this stage, the body's resources are depleted, and it may no longer be able to maintain the physiological responses from the resistance stage. This can lead to a variety of physical and mental health problems, including illness, depression, and burnout.
The general adaptation syndrome is a model that explains how the body responds to stressors over time. Understanding this model can help individuals and healthcare professionals to better manage and cope with stress.
Therefore, the three main features of GAS are the Alarm stage, Resistance stage, and Exhaustion stage.
To learn about the types of biology click:
https://brainly.com/question/28405832
#SPJ3
This movement of warmer and cooler mantle rocks creates pockets of circulation within the mantle called _________,
Assume the light waves start out as unpolarized white light. How do light waves incident on the Polarizer and Analyzer behave at their respective angles?
The Earth's surface is divided up into several large, movable tectonic plates. Which of the following is true about these plates? A. The Earth has both continental and oceanic tectonic plates. B. The Earth has only oceanic tectonic plates. C. The Earth has neither continental nor oceanic tectonic plates. D. The Earth has only continental tectonic plates.
Answer:
the answer is A, the earth has both continental and oceanic tectonic plates.
Explanation:
hope this helped:)
The Earth's surface is divided up into several large, movable tectonic plates, that can be the Earth has both continental and oceanic tectonic plates.
What is tectonic plates?
The Earth's permeable outside husk can be separated or splits in to large parts is called tectonic plates. They are thick layer of warm fluid-rock which are gliding on the Earth's mantle. Plate tectonics forms the oceans, continents, and mountains. Most plates are composed of both continental and oceanic crust.
The lithosphere used to split up into the following parts,
seven very large continental- and ocean-sized plates,six or seven medium-sized regional plates, several small ones.The method of plate tectonics may be inspired by convection in Earth’s mantle, the extraction of heavy old pieces of crust into the mantle, or some combination of both.
Hence, Option A is the correct answer.
Learn more about tectonic plates,
https://brainly.com/question/16944828
#SPJ2
What keeps the balanced rock balanced
Metamorphic rocks are made from
I .sedimentary rocks
II.igneous rocks
III.other metamorphic rocks
A. I and III only
B. III only
C. I and II only
D. I, II, and III
What primarily makes up Saturns rings?
A. Large rocks
B. Small icy bodies
C. Medium sized moons
D. Fine dust
Saturn's rings are made out of B. Small icy bodies
Hope this helped ;)
The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed to raise the temperature of this form from 25oC to 75oC?
0.044 calories
0.275 calories
110 calories
9090.9 calories
Answer: 110 cal
It is given that he specific heat of Iron is [tex] 0.11 cal/g^o C[/tex].
Mass of iron fork 20 g
Heat energy is needed to raise the temperature of this from [tex] 25^o C to 75^o C [/tex]
we can use the following formula to calculate heat energy:
[tex] Q=mC \Delta T [/tex]
where Q is the heat required to raise the temperature by [tex]\Delta T[/tex] of a mass m having specific heat C.
Insert the values:
[tex] Q=20 g \times 0.11 cal/g^oC (75^o C -25^o C)\\\Rightarrow Q=(2.2\times50)cal=110 cal[/tex]
Thus, heat required to raise the temperature of iron fork is 110 cal.
These are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine that have created a hole in the ozone
Question 1 options:
smog
acid rain
chlorofluorocarbons (CFCs)
EPA
Answer:
The correct answer is option C,
chlorofluorocarbons (CFCs
Explanation:
The chlorofluorocarbons (CFCs) were being used in air conditioners, aerosol spray cans, and industrial cleaning products since 1960s. These CFCs are inflammable, but once they are into atmosphere they move to the upper stratosphere and there they enter into a never ending chain reaction thereby releasing chlorine . The free chlorine react with ozone and destroy its molecule.
The unit for measuring the rate at which light energy is radiated from a source is the
A. candela.
B. lumen.
C. lux.
D. Angstrom.
Please explain
A _____________________ _______________________, current moves through multiple
paths at once. If one part fails, the other parts can still work.
Answer: Parallel Circuit
A parallel circuit has current that is involve in two or more paths for the electricity to flow and the loads are parallel to each other. If the loads in this circuit were light bulbs and one part fails, the other parts can still work because there is still current flowing to the others for they are still in a direct path from the negative to positive terminals of the electric source or battery.
If we mechanically squeeze a gas into a smaller volume, what happens to the pressure and temperature?
A. The pressure and temperature both increase, but we can't predict how much each one will change.
B. The pressure increases and the temperature decreases.
C. Only the pressure increases.
If we mechanically squeeze a gas into a smaller volume the pressure and temperature will increase but we can't predict how much each one will change.
Answer: Option A
Explanation:
When we squeeze a gas or a material, a force acts upon it making it to compress which increases the pressure subsequently as tension and compression is always accompanied by pressure.
The temperature of gas also increases as work is done due to transfer of energy which alters the existing temperature.
Three examples of telescopes that detect different types of electromagnetic radiation
Please help me on 3,4 and 6.
Thanks
Which ratio is greater than 5/8
A)12/24
B)3/4
C)15/24
D)4/12
12/24=4x3/8x3
=4/8
4/8 is not correct ans it is less than 5/8
B) 3/4
multiply and divide it by 2 so the denominator should be equal to 8
3x2/4x2=6/8
6/8 is greater that 5/8 hence b is correct option
C)15/24=5/8 which is equalt to 5/8 hence it is not correct answer
D)4/12=1/3 it is also less than 5/8
Our turtle Adel walks 10 feet in 50 minutes. How fast is Adel travelling? Be sure to include the equation for speed in your answer.
Please select the word from the list that best fits the definition the name for continents in one landmass surrounded by gigantic ocean
Answer:
subcontinent
Explanation:
a subcontinent is a large landmass, smaller than a continent
The lowest note on the piano has the longest string to vibrate. How does the lowest note compare if you consider the column of air that is vibrating in test tubes or bottles?
Final answer:
Longer piano strings and longer air columns in musical instruments both produce lower notes due to lower frequencies of vibration. The lowest note on a piano correlates with the longest string, similar to how the longest air column in a wind instrument produces the lowest note. For a clarinet, the third harmonic frequency would be three times the fundamental frequency (e.g., 3 × 147 Hz = 441 Hz).
Explanation:
The student's question relates to how vibrations in piano strings and air columns generate sound. For a piano, the pitch of a note is determined by the frequency of the vibrating string, with longer strings producing lower notes. The sound production principles in both cases rely on the physical properties of the system - in the piano, the length, tension, and mass of the string, and in air columns, the length and shape of the column. When comparing to an air column in a test tube or bottle, the longest string on the piano corresponds to the longest air column, which also produces the lowest note. Consequently, the lowest note on the clarinet is produced when all the tone holes are closed, yielding the longest effective length of the air column and hence the longest wavelength and lowest frequency.
In relation to air columns, the frequency of the third harmonic in a clarinet can be predicted based on the fundamental frequency. If the fundamental frequency is 147 Hz, the third harmonic, being three times the fundamental frequency, would be 3 × 147 Hz = 441 Hz.
Which best contrasts an electric generator and an electric motor? In a generator, slip rings function as a solenoid, and in a motor, an armature functions as a solenoid. In a motor, slip rings function as a solenoid, and in a generator, an armature functions as a solenoid. A generator converts electrical energy to kinetic energy, and a motor converts kinetic energy to electrical energy. A generator converts kinetic energy to electrical energy, and a motor converts electrical energy to kinetic energy.
Answer: (D)
A generator converts kinetic energy to electrical energy, and a motor converts electrical energy to kinetic energy.
Explanation:
Just remember a generator makes electricity, and motors move things therefore creates kinetic energy.
The best contrast between an electric generator and an electric motor is,
A generator converts kinetic energy to electrical energy and a motor converts electrical energy to kinetic energy. The main difference between the two is, that the generator works on the principle of Electromagnetic induction, and the motor works on the principle of the Effect of Magnetic field on a current-carrying coil.
Electromagnetic Induction:Electromagnetic induction is the process of generating electric current with a magnetic field. Whenever a current flowing conductor is passing through lines of force in a magnetic field, electrical energy is generated.In this way a generator converts mechanical energy into electrical energy Effect of Magnetic field on a current-carrying coil:A force is applied when an electric current is present in a magnetic field. This results in mechanical action.In this way an electric motor converts electrical energy into mechanical energy.Thus, the best contrast between a generator and an electric motor is the energy conversions. A generator converts mechanical energy into electrical energy and an electric motor converts electrical energy into mechanical energy.
Learn more about Electromagnetic induction here:
https://brainly.com/question/15566299
#SPJ2
Which is a unit rate
A)47c for 2 pens
B)20 gallons or 2 hours
C)15 hours for 3 months
D)18 miles driven in a week
Answer: D) 18 miles driven in a week
Explanation:
A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity.
a. 47 c for 2 pens
thus the price is for 2 pens and not 1.
b. 20 gallons or 2 hours
Thus the amount of gasoline used is for 2 hours and not 1.
c. 15 hours for 3 months
Thus the time given is for 3 months.
d. 18 miles driven in a week
The distance given is for 1 week and thus is the unit rate.
Thus unit rate is 18 miles driven in a week.
Which ordered pair on a distance versus time graph represents a distance of 1 km and a time of 10 minutes? (10,1) (1,10) (1,9) (9,1)
Answer:
(10,1)
Explanation:
Given: distance of 1 km and time taken 10 minutes.
To Find: Which ordered pair represents a distance of 1 km and a time of 10 minutes in distance time graph.
Solution:
Consider the file attached.
We know that any point in a graph with point [tex]\text{x}_{i}[/tex] on x-axis and [tex]\text{y}_{i}[/tex] on y-axis=[tex](\text{x}_{i},\text{y}_{i})[/tex]
in a distance versus time graph,
Y-axis represents Distance and X-axis represents Time
plotting the points in Distance versus time graph,
distance [tex]1\text{km}[/tex] is plotted on Y-axis
Time [tex]10\text{minutes}[/tex] is plotted on X-axis
from graph,
the ordered pair for distance of [tex]1\text{km}[/tex] and Time [tex]10\text{minutes}[/tex] is represented by [tex](10,1)[/tex].
a wall switch is connected to a wall outlet. A lamp is plugged into the same outlet. You turn the switch on, but the lamp stays off. Give three reasons why this might happen.
A wall switch is connected to a wall outlet. A lamp is plugged into the same outlet. You turn the switch on, but the lamp stays off. Three reasons why this might happen are a Defective bulb, a Faulty switch and Issues with the outlet.
Defective bulb: The lamp's bulb may be burned out, causing it not to light up.
Faulty switch: The wall switch itself may be faulty and not properly completing the circuit to the lamp.
Issues with the outlet: There could be a problem with the electrical outlet, like a loose connection or no power supply.