Which statement is correct about two objects that have gravitational force?
They have mass.
They move slowly.
They are round in shape.
They have high temperature.

A child touches the metal leg of a chair. The temperature of metal leg is moving to her hand.

The temperature is the degree of hotness or coldness when an object is touched.

The metals are generally have less temperature compared to the surrounding temperature. When a child touches the leg of a metal chair, she feel cold, but the physical term is temperature which is moved to her hand.

Thus, temperature of metal leg is moving to her hand.

Learn more about temperature.

https://brainly.com/question/11464844

#SPJ1

Answer:

As frequency increases, wavelength decreases. Frequency and wavelength are inversely proportional. This basically means that when the wavelength is increased, the frequency decreases and vice versa.

Explanation:

A wave's velocity is independent of its intensity and equal to the product of its wavelength and frequency (number of vibrations per second) so, velocity remains constant if you increase the frequency.

Frequency is defined as the no of waves that are passing from the point in respect to a given time. Frequency can be measured in Hertz. Humans, whose capacity to hear is normal, can hear between the frequency of 20 Hertz to 20000 Hertz.

In mathematical form, the frequency is the factor of one divided by the time period. The number of cycles or vibrations a body in periodic motion makes in one unit of time.

Wavelength reduces as frequency rises. The relationship between frequency and wavelength is inverse. In essence, this means that the frequency reduces as the wavelength increases and vice versa.

Frequency ∝ 1 / Wavelength

Velocity = Frequency  ×  Wavelength

Thus, it remains constant.

To know more about frequency:

https://brainly.com/question/14316711

#SPJ2

Answer:

np 500000 eeeeeeeeeeee

Explanation:

346 763 999 eeeeeeeeeeeee

The velocity of first object after the collision is 16.62cm/s and the velocity of second object after collision is 32.783cm/s.

Given initial mass of object (m1) = 26g = 26x10-3kg

initial velocity of object (u1) = 19cm/s = 0.19m/s

mass of second object (m2) = 11g = 11x10-3kg

initial velocity of second object (u2) = 15cm/s = 0.15m/s

Let the velocity of first object after collision = v1

the velocity of second object after collision = v2

These objects are elastically collided. Then from law of conservation of momentum we can see that m1u1+m2u2 = m1v1+m2v2

Here kinetic energy is also conserved. Then

1/2m1u1^2 + 1/2m2u2^2 = 1/2m1v1^2 + 1/2m2v2^2

Then v1 = (m1-m2)/(m1+m2)×v1 + 2×m2/(m1+m2)×v2

v1 = (26-11)/(26+11)×(19) + 2×(11)/(26+11)×(15)

v1 = 7.702 + 8.918 = 16.62cm/s

Then v2 = 2×m1/(m1+m2)×v1 + (m2-m1)/(m1+m2)×v2

v2 = 2×(26)/(26+11)×(19) + (11-26)/(26+11)×(15)

v2 = 26.702 + 6.081 = 32.783cm/s

To learn more about collision click here https://brainly.com/question/4322828

#SPJ4

Answer:

Platinum

Explanation:

The specific heat of a substance gives the amount of energy it takes to raise the temperature.

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

To know more about plants visit:

https://brainly.com/question/31220793

#SPJ11

Given Information:

\(m_{1}=1.3 \ kg\) (Mass of the block attached to the pendulum)

\(l=1.7 \ m\) (Length of the string)

\(m_{b}=0.01 \ kg\) (Mass of the bullet)

Information we want to Find:

\(||\vec v_{b} || = ?? \ m/s\)

Concepts/Equations used:

Using the idea of momentum, momentum conservation, and energy conservation to solve.

Momentum => \(\vec p=m \vec v\)

Momentum Conservation => \(\vec p_{0} = \vec p_{f}\)

Energy Conservation => \(E_{0} = E_{f}\)

Finding the blocks velocity at the bottom of its swing using conservation of energy. Analyzing points 1 and 2 (Refer to the attached image).

Energy at point 1...

The energy at point 1 is all gravitational potential energy, where \(U_{g} =m_{1} gl\).

\(\Longrightarrow U_{g} =m_{1} gl\)

\(\Longrightarrow U_{g} =(1.3)(9.8)(1.7)\)

\(\Longrightarrow U_{g} =(1.3)(9.8)(1.7)\)

\(\Longrightarrow U_{g} = 21.658 \ J\)

Thus, \(E_{0}= 21.658 \ J\).

Now for the energy at point 2...

The energy at point 1 is all kinetic, where \(K=\frac{1}{2}m_{1}v^{2} _{f}\).

\(\Longrightarrow K=\frac{1}{2}m_{1}v^{2} _{f}\)

\(\Longrightarrow K=\frac{1}{2}(1.3)v^{2} _{f}\)

\(\Longrightarrow K=0.65v^{2} _{f}\)

Thus, \(E_{f}=0.65v^{2} _{f}\).

\(E_{0} = E_{f}\)

\(\Longrightarrow 21.658 = 0.65v^{2} _{f}\)

\(\Longrightarrow v^{2} _{f}=33.32\)

\(\Longrightarrow v _{f}=\sqrt{33.32}\)

\(\Longrightarrow v_{f} = 5.77 \ m/s\)

The momentum of the block at point 2, \(\vec p =m_{1} \vec v_{f}\).

\(\vec p_{block} =m_{1} \vec v_{f}\)

\(\Longrightarrow \vec p_{block} =(1.3) (5.77)\)

\(\Longrightarrow \vec p_{block} = 7.50 \ Ns\)

For the block to stop the momentum of the bullet must equal the momentum of the moving block.

\(\vec p_{0} = \vec p_{f} = > \vec p_{bullet} = \vec p_{block}\)

\(\Longrightarrow m_{b} \vec v_{b} = 7.5\)

\(\Longrightarrow (0.01) \vec v_{b} = 7.5\)

\(\Longrightarrow \vec v_{b} = 750 \ m/s\)

Thus, the bullet was travelling 750m/s before hitting the block.

Woman's overall hearing loss is 120 dB.

A threshold intensity is the minimum amount of energy required for a person to perceive a sound at a given frequency. A decibel (dB) is a unit of measurement for the intensity of sound. A gain of 1 in decibels corresponds to a 10-fold increase in intensity (sound pressure level). Therefore, the amplification of 5.0 × 1012 times the threshold intensity is equivalent to a gain of 120 dB. This means that the woman's overall hearing loss is 120 dB.

The woman's hearing loss in dB can be determined using the following formula:

Gain in dB = 10 log10 (amplification)

For an amplification of 5.0 × 1012, the gain in dB is:

Gain in dB = 10 log10 (5.0 × 1012)

                 = 10 × 12.7

                 = 127

Therefore, the amplification of 5.0 × 1012 times the threshold intensity is equivalent to a gain of 127 dB. To avoid further damage to her hearing from levels above 90 dB, smaller amplification is appropriate for more intense sounds.

Learn more About decibel from the given link

https://brainly.com/question/28784082

#SPJ11

Answer:

Prefer Soil more than sand

Explanation:

Answer:

south east

Explanation:

because two step to the east then a step to the west displaces one to east still but southwards

Answer:

I can not see the image, so i will answer in a general way.

As you know, the sound behaves like a wave, this means that the sound needs some time to cover a given distance. An example of this motion can be seen when you drop a little stone in water, and you can see how the waves expand.

This means that the one who will hear the sound first, will be always the one that is closer to the source of the sound, in this case, the sound comes from the ball hitting the backboard, then the one who is closer to the backboard will hear the sound first.

Explanation:

Hydrostatic pressure, P = hdg where d is density if the liquid ( water)

P= 150m × 1000kgm-3 × 10ms-2

P= 1.5 ×10^6 Pa

When light travels from one medium to another, its speed, direction, and wavelength can change, while its frequency remains constant. These changes are due to differences in the refractive indices of the two media.

As light travels from one medium to another, several of its properties change, including its speed, direction, and wavelength. The speed of light changes because the refractive index of each medium is different, which alters the velocity of the wave. The direction of the light may also change, a phenomenon known as refraction, as it enters a medium with a different refractive index. The amount of refraction depends on the angle of incidence, the angle between the incoming light and the normal line to the surface of the medium. Finally, the wavelength of the light may also change due to the refractive index of the medium, a phenomenon known as dispersion. This results in the separation of white light into its component colors when it passes through a prism or other refracting medium.

learn more about wavelength here:

https://brainly.com/question/13676179

#SPJ4

When two ideal inductors, \( L_1 \) and \( L_2 \), with zero internal resistance are connected in series, their equivalent inductance, \( L_{\text{eq}} \), can be found by applying Kirchhoff's voltage law (KVL).

Let's consider the voltage across each inductor in the series combination. According to KVL, the sum of the voltage drops across the inductors must be equal to the total applied voltage.

The voltage drop across an inductor is given by the formula \( V = L \frac{di}{dt} \), where \( V \) is the voltage, \( L \) is the inductance, and \( \frac{di}{dt} \) is the rate of change of current.

Since the inductors are ideal and have zero internal resistance, the current through both inductors will be the same. Therefore, the rate of change of current will also be the same.

By applying KVL, we have:

\( V_{\text{total}} = V_1 + V_2 \)

\( = L_1 \frac{di}{dt} + L_2 \frac{di}{dt} \)

\( = (L_1 + L_2) \frac{di}{dt} \)

Comparing this with the formula \( V = L_{\text{eq}} \frac{di}{dt} \), we can see that \( L_{\text{eq}} = L_1 + L_2 \).

Thus, when two ideal inductors are connected in series, their equivalent inductance is simply the sum of their individual inductances, which is \( L_{\text{eq}} = L_1 + L_2 \).

This is true because the magnetic fields of the two inductors do not influence each other, as they are far apart.

Learn more about Kirchhoff's voltage law

https://brainly.com/question/33381994

#SPJ11

Answer:

im pretty sure about C

Explanation:

a switch acts a resistor that can be turned on and off

Also it's the same for Automotive purposes

The direction of the velocity of the other part in the instant after the explosion is:  up and to the left.

When a particle is hurled obliquely near the surface of the earth, it travels along a curved path while accelerating continuously in the direction of the planet's center. Such a particle's motion is known as projectile motion.

As one part falls straight down with no horizontal motion, the total component of horizontal momentum will be in the another part and due to law of conservation of momentum, a upward momentum will be introduced after the collision. the direction of the velocity of it will be  up and to the left.

Learn more about projectile motion here:

https://brainly.com/question/11049671

#SPJ1

a)

We know that the angular acceleration is related to the linear acceleration by:

where alpha is the angular acceleation and r is the radius, then, in this case we have:

Therefore the linear acceleration is 0.6545 meters per second per second.

b)

The linear velocity is related to the angular velocity by:

where omega is the angular velocity, plugging the values we have and solving for the angular velocity we have:

Therefore the angular velocity is 27.013 radians per second.

c)

To determine the time it takes for the cyclist to reach that velocity we use the equation:

since he started at rest this means that the initial velocity is zero; plugging the values we know and solving for t we have:

Hence it takes 15.89 seconds to reach this velocity. To determine how many radians the wheels turned we use the fact that:

then we have:

Therefore the wheels turned 214.618 radians.

d)

To determine how far the bycicle traveled in this time we use:

then we have:

Therefore the bicycle traveled 82.628 meters.

Answer:

0.22 km/h

Explanation:

72 hours in 3 days

16/72 = 0.222222222

round to 0.22 km/h

For future reference, Distance/Time= Speed

Answer:

the distance between point a and b and the time it takes to get from a to b.

Explanation:

d/t =v

The chief factor that determines what type of electromagnetic radiation that objects give off in the absence of a strong magnetic field is their temperature.

The radioactive activity refers to the energy that a atomic nucleus can release in a given period of time due to the emission of different types of radiation.

This activity (radioactive activity) increases as temperature rises due to a higher collision of subatomic particles that form molecules.

In conclusion, the chief factor that determines what type of electromagnetic radiation in the absence of a magnetic field is temperature.

Learn more about the radioactive activity here:

https://brainly.com/question/11117468

#SPJ1

Climate in an area is determined by a complex interplay of factors, including mountains latitude, topography, and atmospheric circulation patterns. Understanding these factors is crucial in predicting weather patterns.

Three factors that contribute to an area's climate are:

1) Latitude: The latitude of an area determines the angle at which the sun's rays hit the earth's surface, which affects the amount of solar energy that is absorbed. Areas near the equator receive more direct sunlight and therefore tend to be warmer, while areas near the poles receive less direct sunlight and tend to be cooler.

2) Topography: The topography of an area, including its elevation and proximity to large bodies of water or mountains, can greatly influence its climate. Areas at high elevations are generally cooler than areas at lower elevations, and areas near large bodies of water tend to have milder temperatures due to the moderating effect of the water. Mountains can also influence climate by blocking or redirecting prevailing winds, leading to variations in temperature and precipitation.

3) Atmospheric circulation patterns: The movement of air masses and weather systems around the globe is driven by a complex interplay of factors, including temperature, pressure, and the rotation of the earth. These circulation patterns can greatly affect the climate of an area by determining the direction and intensity of winds, the amount of precipitation, and the frequency and severity of storms.

In Ricardo's case, the climate in his area is likely influenced by all three of these factors. The latitude of his location along the west coast of the mountains will determine the angle at which the sun's rays hit the earth's surface and thus the amount of solar energy absorbed. The topography of the area will also play a role in determining the temperature and precipitation patterns, as well as the effect of ocean winds blowing from the Pacific. Finally, atmospheric circulation patterns will determine the direction and intensity of winds and the frequency and severity of storms that pass through the area.

To know more about mountains please refer: https://brainly.com/question/18369361

#SPJ1

Answer:

Work input = 1620

Explanation:

Given the following data;

Work output = 810

Efficiency = 50%

To find the work input;

Mathematically, efficiency is given by the formula;

\( Efficiency = \frac {Out-put \; work}{In-put \; work} * 100 \)

Substituting into the formula, we have;

\( 50 = \frac {810}{WI} * 100 \)

Cross-multiplying, we have;

\( 50I = 810 * 100 \)

\( 50I = 81000 \)

\( WI = \frac {81000}{50} \)

Work input = 1620

Answer: The rabbits will die off and the things that rabbits eat will overpopulate.

Explanation:

Answer:

Nobel gases

Explanation:

Well since Krypton is in a group called the “Noble Gases”, then Krypton is similar to the others; Xenon, Helium, Neon, Argon, and Radon.

Based on the nature of reflection of light from surfaces, smooth surfaces produce regular reflection while rough surfaces produce diffuse reflection.

Reflection of light waves refers tobtye bouncing back of light waves when they hit a shiny surface.

Depending on the nature of the surface, reflection of light waves can either be regular if diffuse.

Smooth surfaces produce regular reflection while rough surfaces produce diffuse reflection.

Based on the properties of reflection:

Therefore, it can be concluded that the rough surfaces produce diffuse reflection while smooth and glossy surfaces produce regular reflection.

Learn more about reflection at: https://brainly.com/question/377660

Answer:

10kg ball

Explanation:

a laptop is a lot less in weight so you have to use less force to lift it

Answer:

10 kg bowling ball

Explanation:

A h e m.

It would be easy to lift 1kg laptop 20 meters without breaking a sweat and would be less than your body weight. But a 10kg bowling ball is that x10 so its  heavier

Answer:

Systems always tend toward a state of decreasing order unless more energy is provided into the system to counteract this tendency.

The velocity of the laundry bag before collision is 4.22 m/s. The collision of two objects in the absence of an external force does not affect the momentum of the two bodies.

Collision is the sudden, forceful coming together of two objects in direct contact with each other, such as, two billiard balls, a golf club and a ball, a hammer and a nail head, two cars when being coupled together.

In order to solve this problem, the principle of conservation of momentum can be applied. This tells us that the momentum of a system is preserved before and after a collision.

Both the movements i.e., bag and cart are positive, since they both move in the same direction. Now, the momentum of objects before the collision is equal to the momentum of objects after the collision.

This can be represented as:

m₁ × v₁ = m₂ × v₂

Here, m₁ = mass of the laundry bag = 22kg

v₁ = velocity of the laundry bag

m₂ = sum of the mass of laundry bag and cart = 9kg

v₂ = velocity of the moving cart = 3m/s

m₁ × v₁ = m₂ × v₂

22kg × v₁ = (22+9)kg × 3m/s

v₁ = (31kg × 3m/s)/ 22kg

v₁ = 93/22

v₁ = 4.22m/s.

Therefore, the velocity of the laundry bag before collision is 4.22m/s.

Learn more about Collision velocity here:

https://brainly.com/question/14069423

#SPJ1

Answer:

Hands opening a bottle with bottle opener

We can use the formula for the rotational motion:

τ = Iα

The moment of inertia of the rotating platform is 0.32 kg m^2.

We can use the formula for the rotational motion:

τ = Iα

where τ is the torque, I is the moment of inertia, and α is the angular acceleration.

In this problem, we know the linear acceleration of the hanging mass, and we want to find the moment of inertia I of the rotating platform. We can relate the linear acceleration to the angular acceleration using the radius r of the platform:

a = αr

We also know the mass m and the force F acting on the hanging mass:

F = ma

The force F produces a torque τ on the platform, given by:

τ = Fr

Substituting the expressions for α and τ into the equation for rotational motion, we have:

Fr = I(a/r)

Simplifying and solving for I, we get:

I = (F/α)r^2 = (mg/α)r^2

Substituting the given values, we have:

I = (0.1 kg)(9.81 m/s^2)/(2.5 m/s^2)(0.2 m)^2

I = 0.32 kg m^2

Therefore, the moment of inertia of the rotating platform is 0.32 kg m^2.

To learn more about Rotational motion click here

https://brainly.com/question/31963237

#SPJ11