25. You push a manual lawn mower across the lawn at constant speed. What is the value of the coefficient of friction between the mower and the grass? F₂= 164 N 0-67 "1 Round to the nearest thousandt

Answer:

Is radiation of sufficient energy to produce ions.

Is radiation of sufficient energy to remove electrons from atoms.

Explanation:

Ionization radiation is a radiation that travels at a high speed, and possesses sufficient speed to knock electrons off of an atom or a molecule, ionizing the atom. Ionization radiation can be made of travelling subatomic particles, or an electromagnetic wave with high energy, usually the types found at the end of the electromagnetic spectrum. Some subatomic particles that produce ionization are alpha particle, beta particles, and neutron. The electromagnetic waves with ionization abilities includes Gamma rays. -rays, and high energy ultraviolet rays.

When the block is replaced by one with twice its mass but the amplitude of its oscillations remains the same, the maximum speed of the block will decrease.

The maximum speed of a block undergoing simple harmonic oscillations depends on the amplitude and mass of the block. According to the equation for simple harmonic motion, the maximum speed (v_max) of an object is given by:

v_max = ω * A

where ω represents the angular frequency and A represents the amplitude of oscillation.

In the case described, the student measures the maximum speed of a block with a certain amplitude, A. Now, if the block is replaced by one with twice its mass (2m) while keeping the amplitude of oscillation (A) the same, we need to consider the effect of mass on the angular frequency.

The angular frequency (ω) of an object undergoing simple harmonic motion is given by:

ω = √(k / m)

where k represents the spring constant and m represents the mass of the block.

Since the spring constant (k) remains constant and the mass (m) doubles, the angular frequency (ω) will decrease.

Now, let's analyze the effect on the maximum speed. As the angular frequency decreases and the amplitude (A) remains the same, the maximum speed (v_max) will also decrease.

To know more about harmonic oscillations refer here

https://brainly.com/question/13152216#

#SPJ11

Answer:

30 years old

Explanation:

Answer:

dont know

Explanation:

need points

Answer:

Yes

Explanation:

Thus, as a plate moves over the location of a plume eruption, it carries successively older volcanoes with it. As hotspot volcanoes are transported by plate motion away from the mantle plume, hotspot volcanism ceases. Eventually the hotspot volcanoes become extinct, gradually subside, and are eroded by wave action.

Have the best day! :D

Answer:

yes

Explanation:

Thus, as a plate moves over the location of a plume eruption, it carries successively older volcanoes with it. As hotspot volcanoes are transported by plate motion away from the mantle plume, hotspot volcanism ceases. Eventually the hotspot volcanoes become extinct, gradually subside, and are eroded by wave action.

hope this helps!

Answer:

Because they could help you move on better with your strategy and ultimately get you better scores on tests  

Answer:

Through feedback, teachers can provide the students with suggestions for development, learning strategies and corrections for errors. The importance of constructive feedback allows for many positive opportunities. This component also enhances a student's self-efficacy and provides an avenue for motivation.

Answer:

it's A

Explanation:

Answer:

They rearrange themselves and join together differently to make new substances called products. The number of atoms of each type is the same before and after a reaction. This means that the total mass of the products is the same as the total mass of the starting substances. In other words, mass is conserved.

The heat energy absorbed by the liquid would be less than 12,867.55 J, and the calculated specific heat capacity would be lower than the actual value.

the average specific heat capacity of the liquid is 4007.6 J/kg°C. b) If the heat transfer from the liquid to the container or surroundings cannot be ignored, then the specific heat capacity calculated in part (a) would be an underestimate.

a) We can use the equation,Q = mcT, where

Q = the heat energy absorbed by the liquid

mc = the specific heat capacity of the liquid

ΔT = the change in temperature of the liquid

The electrical energy converted to heat is 65 J/s x 120 s = 7800 J

The specific heat capacity of water is 4.184 J/g°C.

The heat capacity of the liquid with a mass of 0.780 kg and an average temperature of (18.55°C + 22.54°C)/2

= 20.545°C can be determined.

Q = (0.780 kg) (4.184 J/g°C) (22.54°C - 18.55°C)

= 12,867.55 J

The average specific heat capacity is calculated as follows:

m × c = Q / Tc = Q / (ΔT × m)Substitute the given values,

Q = 12,867.55 JT = 22.54°C - 18.55°C

= 3.99°Cm

= 0.780 kg

c = 12,867.55 J / (3.99°C  0.780 kg)

= 4,007.6 J/kg°C.

Therefore, the heat energy absorbed by the liquid would be less than 12,867.55 J, and the calculated specific heat capacity would be lower than the actual value.

To learn more about temperature, visit:

https://brainly.com/question/7510619

#SPJ11

Answer: The volume of the diver's at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa is 1.66 L

Explanation:

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 101.30 kPa

\(P_2\) = final pressure of gas = 141.20 kPa

\(V_1\) = initial volume of gas = 2.40 L

\(V_2\) = final volume of gas = ?

\(T_1\) = initial temperature of gas = \(32.0^0C=(32+273)K=305K\)

\(T_2\) = final temperature of gas = \(21.0^0C=(21+273)K=294K\)

Now put all the given values in the above equation, we get:

\(\frac{101.30\times 2.40}{305}=\frac{141.20\times V_2}{294}\)

\(V_2=1.66L\)

The volume of the diver's at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa is 1.66 L

Answer:

B..it is conserved

Explanation:

Answer:

Air temperature and air pressure both decreases

Answer: A

Explanation:

Answer:

Mechanical Advantage of car jack is 20

The acceleration of the car at the top of the hill is 6.6 m/s²

acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.

The third kinematic equation is applied to determine the car's tangential acceleration, as illustrated below: v2 = u2 + 2as, where a represents the vehicle's acceleration.

2x50 a = -5.25 m/s²;

2as = v² - u² a

= v²-u² / 2s

a = 102 - 252

At the summit of the hill, the car's centripetal acceleration is given as ac=v²/r

ac=10²/25

ac=4 m/s2.

At the summit of the hill, the car's net acceleration is computed as follows: a net = a2 + ac

a net = (-5.25)2 + 42

a net = 6.6 m/s2.

To learn more about acceleration from given link

https://brainly.com/question/13832829

#SPJ1

Complete Question -

A 1600 kg car is traveling over a hill that has a radius of curvature of 25 m. The car is slowing down as it goes over the hill. It slows down at a constant rate from a speed of 25 m/s to a speed of 10 m/s over a distance of 50 m ending at the top of the hill. The net acceleration of the car at the top of the hill is most nearly

Answer:

the answer is 100%!

your welcome

Answer:

No.

Explanation:

The cut cucumber is still a cucumber.

Answer:

Nope.

Explanation:

Chemical change is transforming the cucumber into a pickle. However, you need vinegar, so it isn't a full change.

Therefore, Mr. Mann would not be right either way, because all he did was cut a cucumber, and he should probably get some help with all this "chemical change".

Answer:

a

 \(a = 21.7 \ m/s^2\)

b

\(F = 108.5 \ N\)  

Explanation:

From the question we told that

   The mass is  m  =  5 kg

    The initial speed \(u = 5 m/s\)

    The time taken to attain \(v = 70 \ m/s\) is  t =  3 s

Generally from kinematic equation we have that

     \(v = u + at\)

=> \(70 = 5 + a * 3\)

=>  \(a = 21.7 \ m/s^2\)

Generally  the force acting is mathematically represented

        \(F = m * a\)

=>      \(F = 5 * 21.7\)  

=>      \(F = 108.5 \ N\)  

At 7 AM (13 hours after 6 PM), the temperature would be close to the average temperature of 59°F, which can be approximated to 65.9°F.

The temperature over a 24-hour period can be modeled using a sinusoidal function, given that the high temperature of 77°F occurs at 6 PM and the average temperature is 59°F.

To find the temperature at 7 AM, we need to consider the characteristics of a sinusoidal function. In this case, the function represents a single day, with the peak temperature at 6 PM and the average temperature over the 24-hour period.

Since a sinusoidal function repeats itself every 24 hours, we can infer that the low temperature would occur 12 hours after the high temperature. Therefore, at 7 AM (13 hours after 6 PM), the temperature would be close to the average temperature of 59°F, which can be approximated to 65.9°F.

To gain a deeper understanding of sinusoidal functions and their applications in modeling temperature variations over time, it would be beneficial to explore topics such as periodic functions, trigonometry, and mathematical modeling.

Learn more about temperature

brainly.com/question/12035620

#SPJ11

Explanation:

Objects like apples, wood, and sponges are less dense than water. They will float. Many hollow things like empty bottles, balls, and balloons will also float. That's because air is less dense than water.

a). (2.0 x 10^9) x (0.1) = 2.0 x 10^8 cubic meters

b). The edge of a cube with that volume is

(2.0 x 10^8) ^ 1/3 = about 585 metres

(about 0.36 of a mile)

==> I'm pretty sure there are actually more than 2 billion adults in the world, since the total population is well over 7 billion now.

Condensation in a longitudinal wave corresponds to the compression part of a transverse wave.

The compression part of a wave is where the particles of a medium are pushed together, while the rarefaction part is where the particles of the medium are spread apart. Longitudinal waves are waves in which the displacement of the medium is in the same direction as the propagation of the wave. In a longitudinal wave, compression corresponds to the crest of the wave, while rarefaction corresponds to the trough. This is different from a transverse wave, in which the displacement of the medium is perpendicular to the propagation of the wave.

In a transverse wave, the compression corresponds to the highest point of the wave, while rarefaction corresponds to the lowest point of the wave. Condensation in a longitudinal wave is where the particles of the medium are pushed together, while rarefaction is where the particles of the medium are spread apart. This is due to the alternating pattern of high and low-pressure regions that make up the wave. In a longitudinal wave, the regions of high pressure correspond to compression, while the regions of low pressure correspond to rarefaction.Overall, the compression part of a transverse wave corresponds to condensation in a longitudinal wave, while the rarefaction part of a transverse wave corresponds to a rarefaction in a longitudinal wave.

In conclusion, condensation in a longitudinal wave corresponds to the compression part of a transverse wave. The compression part of a wave is where the particles of a medium are pushed together, while the rarefaction part is where the particles of the medium are spread apart. This is due to the alternating pattern of high and low pressure regions that make up the wave.

To know more about rarefaction visit:

brainly.com/question/12731884

#SPJ11

Changing the length of a string may alter the force in a physical system, like a pulley mechanism, if it impacts its tension and length.

Nonetheless, regarding a digital system such as a software application, replacing the string with another one that does not affect any crucial factors is improbable to cause an alteration in said force amount.

Determining whether changing a component of a method leads to any modifications in strength requires recognizing essential aspects influencing that force while keeping in mind how this modification might hinder these key elements.

Learn more about force on

https://brainly.com/question/12970081

#SPJ1

Answer:

mass 3.67 kg, density 600 kg/m3) is fitted

with lead (density 1.14 * 10^4 kg/m3) so that it floats in water with

0.900 of its volume submerged. Find the lead mass if the lead is fitted

to the block’s (a) top and (b) bottom.

G is the gravitational constant, M is the mass of the gravitating body, and r is the separation between their centers.

To learn more about gravitational potential energy refer to:

https://brainly.com/question/3120930

#SPJ1

Answer:

2.66 m/s² .

Explanation:

Initial velocity , u = 0 m/s

Final Velocity , v = 8 m/s

Time Taken , t = 3 s

So , Acceleration = (v-u)/t = (8 m/s - 0 m/s) /3 sec . = 8/3 m/s² = 2.66 m/s²

Answer:

1. Motion

2. Empty space

3. Far apart

4. Independently

5. Random or rapid

6. Collision

7. Kinetic energy

8. Atmospheric

9. 273 Kelvin or 0° Celsius

10. 1 atm, 101.3 kPa or 760 mmHg

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.

Generally, matter exists in three (3) distinct or classical phases and these are;

I. Gas.

II. Solid.

III. Liquid.

Filling the missing words or texts in the question, we have;

The kinetic theory describes the motion of particles in matter and the forces of attraction between them. The theory assumes that the volume occupied by a gas is mostly empty space, that the particles of gas are relatively far apart, move independently of each other, and are in constant random or rapid motion. The collision between particles are perfectly elastic so that the total kinetic energy remains constant. Gas pressure results from the simultaneous collisions of billions of particles with an object. Barometers are used to measure atmospheric pressure. Standard conditions are defined as a temperature of 273 Kelvin or 0° Celsius and a pressure of 1 atm, 101.3 kPa or 760 mmHg.

Studies of sunquakes, or helioseismology, have revealed that our mathematical models of the solar interior are fairly accurate. The correct option is (B).

Helioseismology is the study of the Sun's internal structure and dynamics by analyzing its oscillations.

These oscillations, often referred to as sunquakes, are caused by sound waves trapped and bouncing within the Sun. By studying the properties and behavior of these waves, scientists can gain valuable insights into the solar interior.

Through helioseismology, scientists have found that our mathematical models of the Sun's interior, based on principles of physics and stellar evolution, align quite well with the observed data.

The oscillation patterns and frequencies detected from the Sun match the theoretical predictions, providing confidence in our understanding of the Sun's internal structure, composition, and energy generation mechanisms.

A) the Sun vibrates only on the surface.

Helioseismology studies have revealed that the Sun vibrates not only on its surface but throughout its interior as well. Therefore, option A is incorrect.

Overall, helioseismology has contributed significantly to our knowledge of the Sun's dynamics and has validated our mathematical models, making option B the correct answer.

To know more about "Helioseismology" refer here:

https://brainly.com/question/32799958#

#SPJ11

Answer:

Gravity

Explanation:

It is gravity because the sun's gravity pulls all the planets towards itself and keeps the planets in the sun's orbit

Predation is a density-dependent factor because its impact on a population is influenced by the population's density.

Predation refers to the act of one organism, called the predator, feeding on another organism, known as the prey. The relationship between predators and prey is intricately tied to population density. When the population density of prey is low, predators may struggle to find enough individuals to sustain themselves, resulting in lower predation rates. However, as prey density increases, there is greater availability of potential prey, leading to an increase in predation rates.

As prey density rises, predators have a higher chance of encountering and capturing prey individuals. This results in an increase in the predator population size and their overall predation rate. However, as the predator population grows, the availability of prey may start to decline due to predation pressure. This leads to a decrease in prey density over time. Consequently, the predator population may experience reduced food availability, causing a decline in their population size. This cycle of interactions between predator and prey populations demonstrates how predation acts as a density-dependent factor, with changes in prey and predator densities influencing each other.

To learn more about density refer:

https://brainly.com/question/1978192

#SPJ11

Answer:

A centripetal force

Explanation:

The type of force in the given scenario is tension. The correct option is c.

Tension is defined in physics as the pulling force conveyed axially by a string, cable, loop, or similar material, or by every end of a rod, truss member, or similar three-dimensional object.

Tension can also be defined as the action-reaction pair of forces acting at each end of said elements.

Newton's second law states that the tension in the rope must equal the weight of the backed mass.

Tension, the normal force, and friction are all examples of contact forces.

Since the weight is not moving, the acceleration is zero. Even if the acceleration is not zero, this equals zero.

Thus, the correct option is c.

For more details regarding tension force, visit:

https://brainly.com/question/2287912

#SPJ2

Your question seems incomplete, the missing options are: