If a wavelength of a wave increases, but the wave speed remained the same, would the frequency increase, decrease or stay the same?

Answer:

generator

Explanation:

it can run an electric current to an outlet and let it charge

Gravity bulb of hydrometer is made heavier so that its centre of gravity remains very low, when it is floating in denser liquids.

Answer:

The bottom of the hydrometer is made heavier by loading it with lead shots so that it floats vertically with some of its portion outside the surface of the water in the jar.

Explanation:

A hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy. ... A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring

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Answer:

Advantage: Mercury has a lower freezing point (-1140 degree Celsius)

Disadvantage: Mercury has a lower boiling point

Answer:

-3.9 m/s

Explanation:

Given that

Initial velocity, u of both bodies = 0

Initial momentum of the bodies = 0

Final velocity, v of the 3M block = 1.3 m/s

Mass M of the block A = M

Mass m of the block B = 3M

To solve this question, we would have to use the law of conservation of momentum. The law states that in any system, momentum is always conserved. Thus, initial momentum = final momentum. Mathematically, we have

M * V(a) + 3M * V(b) = 0

The velocity of the block 3M block is V(b) has been given to be 1.3 m/s, so then

M.V(a) = - 3M * 1.3

V(a) = -3.9M/M

V(a) = -3.9 m/s

The potential energy of the water having height of 45 m and has a mass of 250 kg is 110,250 Joule.

The force acting on the two objects affects the potential energy formula. The formula for gravitational force is P.E. = mgh, where g is the acceleration caused by gravity (9.8 m/s2 at the earth's surface) and h is the height in meters.

Substituting the value of mass (m), height(h) and g in the formula of potential energy

P.E = mgh

P.E. = 250*9.8*45

P.E.= 110,250 J  

Potential energy is the power that a thing possesses as a result of where it is in relation to other objects. Because the earth can pull you down through the force of gravity while doing work in the process, being at the top of a stairwell gives you more potential energy than standing at the bottom.

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Answer:

Play tennis, nothing can train you better for the sport than the sport itself. However, tennis is one of those unique sports that combine nearly all components of fitness including power, agility, speed, flexibility, reaction time, balance, coordination, cardiovascular endurance and muscular endurance.

Explanation:

\(a_c = 3.14\:\text{m/s}^2\)

Explanation:

First, we need to convert the given angular speed \(\omega\) from rev/s to rad/s:

\(2.50\:\dfrac{\text{rev}}{\text{s}}×\dfrac{2\pi\:\text{rad}}{1\:\text{rev}} = 15.7\:\text{rad/s}\)

The centripetal acceleration \(a_c\) is defined as

\(a_c = \dfrac{v^2}{r}\)

Recall that \(v = r\omega\) so we can write \(a_c\) as

\(a_c = \dfrac{(r\omega)^2}{r} = \omega^2r\)

\(\;\;\;\;\;=(15.7\:\text{rad/s})^2(0.200\:\text{m}) = 3.14\:\text{m/s}^2\)

Answer: the slope of the cars position-time graph

Explanation:

Just took the test

A

Explanation:

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Answer:

Explanation: Acceleration due to gravity is the acceleration acquired by an object due to the gravitational force. It is a vector quantity, denoted by g and its SI unit is m ... The mass of the earth is about 6E24 kg and the earth radius (Re) is 6371 km which gives G= 9.8m/s/s as the acceleration constant at earth's surface.  I hope this is helpful :)

Acceleration on a body that approached the earth and comes within 6 earth radii of the earth’s surface is 0.2046 m/s²

Acceleration is rate of change of velocity with respect to time.

i.e. a = dv/dt

if an object changes its velocity in short time, we can say that it has grater acceleration.

a= dv/dt =Δv/Δt =  \(\frac{v_{2}- v_{1} }{t_{2}- t_{1}}\)

where    v₂= initial velocity

             v₁= final velocity

             t₂= initial time

             t₁ = final time  

Acceleration due to gravity is nothing but acceleration produced in the body due to gravitational force. According to second newton's second law, F=ma, force is responsible for the acceleration of the body. it is denoted by g and which is equal to 9.8 m/s². Acceleration due to gravity is affected by the height at which a body is from the surface of the earth.

Acceleration due to gravity at height h is given by,

g(h) = GM ÷ (R+h)²

where

g(h) = acceleration due to gravity at height h.

G = universal gravitational constant.

M = mass of the planet(earth)

R= radius of the planet(earth)

h = height of the object from surface.

Given,

G = 6.67 × 10⁻¹¹ m³ kg⁻¹ s⁻²

M = 5.97 × 10²⁴ kg

R = 6.3 × 10⁶ m

h=  6R

g(h) = (6.67 × 10⁻¹¹)×(5.97 × 10²⁴) ÷(R+6R)²

g(h) = 3.98×10¹⁴ ÷ (7×6.3 × 10⁶)²

g(h) = 0.2046 m/s²

Hence acceleration due to gravity of body is 0.2046 m/s²

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Answer:c

Explanation: because if you work it in a paper it should like lil wit is straight the numbers are going up by 16

Answer:

its b for sure

Explanation:

Answer:

B. It might be accessed by someone who was not the intended

recipient

Answer:

he lower part of the curve     N = M (g + v² / r)

upper part of the curve          N = m (v² /r -g)

Explanation:

In a roller coaster there is a long climb that allows the car to acquire gravitational potential energy, when this energy is converted into kinetic energy, there is a raven, in these curves we have two parts the lower part, where you have a feeling of great weight and another in the upper part where you have a feeling of weightlessness.

These sensations can be explained using Newton's second law, let's apply it to the lower part of the curve

         N-W = m a

acceleration is centripetal

        a = v² / r

we substitute

        N = mg + m v² / r

        N = M (g + v² / r)

In this part the apparent weight is increased by the speed of the body squared, it feels like a lot of fart.

In the upper part of the curve the force of gravity continues to act downwards, the normal that is the reaction of the surface also goes downwards, the centripetal acceleration pointing towards the center of the curve has a vertical downward direction

        -N -W = -m a

         N = ma -W

         N = m (v² / r -g)

In this case we see that the normal that gives the sensation decreases, which is why we feel a loss of weight, in the case of v2 / r = g, the request is total and the sensation of weightlessness.

Answer:

The pressures acting on a submarine at 50 m are much less than the pressures at a depth of 200 m. The lower the submarine goes, the higher the pressure.

Explanation: I did some research on this and got it right.

Answer:

false....

Explanation:

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Answer:

When light traveling through air enters water at an angle, it moves in a curve in air and changes direction when it enters water. This bending of light is known as refraction. The angle at which the light bends depends on the difference in the refractive indices of the two media, which is why the light bends when it enters the denser medium of water.

Answer:

this is a homework helping website I don't know If I can help you with this problwm

Answer:1.5m/s

Explanation:

lol its right

Answer:

45/10=4.5•3=13.5+45=58.5

Explanation:

Answer:

$58.50

Explanation:

it would be 58.5 but if it with money it is $58.50

Answer:

I believe your looking at either 1 or 2

Explanation:

Answer:

D. Some atoms lack a neutron

Explanation:

Some atoms has less neutron than protons and those are called isotope atom.

Answer:

Momentum is a term used in physics to describe an object's resistance to change its motion. It is a measure of an object's mass and velocity and can be mathematically represented by the equation p = mv, where p is momentum, m is mass, and v is velocity.

Momentum is a vector quantity, meaning it has both magnitude and direction. It can be thought of as the amount of motion an object possesses in a particular direction. For example, a large truck traveling at a high speed has more momentum than a small car traveling at a slower speed, even though they both may have the same mass.

In physics, momentum plays a crucial role in determining how objects will react when they collide. If two objects collide and have equal and opposite momentum, they will typically bounce off each other. However, if one object has much more momentum than the other, it is likely to push the other object aside and continue on its original path.

It is also important to note that momentum is conserved in isolated systems. This means that if two or more objects collide or interact with each other, the total momentum before the collision is equal to the total momentum after the collision.

In conclusion, momentum is a fundamental concept in physics that helps to describe and understand the motion of objects. It is a combination of an object's mass and velocity, and it determines how objects will interact when they collide.

Please mark me brainliest if I helped.

Answer:

4 mph

Explanation:

velocity =   miles divided by time =  miles/time

             =   1 mile / .25 hr   = 4 mph

Elements are arranged on the periodic table in terms of valence electrons based on their atomic number and electron configuration.

1. Elements are arranged on the periodic table in terms of valence electrons based on their atomic number and electron configuration. The valence electrons are the outermost electrons in an atom's electron shell, and they are crucial in determining the chemical properties and reactivity of elements.

2. Evidence from data tables can be shown by examining the electron configuration and the group and period numbers of various elements on the periodic table. Here is a simplified example:

Element   | Electron Configuration | Group | Period |

--------------------------------------------

Hydrogen  | 1s^1                              | 1     | 1      |

Lithium       | [He] 2s^1                     | 1     | 2      |

Carbon       | [He] 2s^2 2p^2          | 14    | 2      |

Oxygen      | [He] 2s^2 2p^4          | 16    | 2      |

Neon          | [He] 2s^2 2p^6          | 18    | 2      |

--------------------------------------------

3. The evidence from the data table supports the claim that the arrangement of elements on the periodic table is based on valence electrons.

- Group Trend: Elements within the same group (vertical columns) share the same number of valence electrons. In the example table, Hydrogen, Lithium, and Neon are all in Group 1, indicating they have 1 valence electron.

- Period Trend: Elements within the same period (horizontal rows) have the same number of electron shells. In the example table, Hydrogen and Lithium are in Period 1, indicating they have their valence electron in the first energy level. Carbon, Oxygen, and Neon are in Period 2, indicating they have their valence electrons in the second energy level.

By examining the electron configurations, group numbers, and period numbers, we can clearly see the trends and patterns in the number of valence electrons for both groups and periods on the periodic table. This evidence supports the claim that the arrangement of elements on the periodic table is based on their valence electrons, which play a crucial role in determining their chemical behavior and properties.

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Answer:h

Explanation:

Answer:

\(V_2=3.3m/s\)

Explanation:

From the question we are told that:

Distance \(d_1=1.4m\)

Tangential speed \(V=2.2m/s\)

Distance 2 \(d_2=2.1m\)

Generally the equation for Angular velocity is mathematically given by

 \(w=\frac{v}{r}\)

Therefore

 \(\frac{v_1}{r_1}=\frac{v_2}{r_2}\)

 \(V_2=\frac{2.2*2.1}{1.4}\)

 \(V_2=3.3m/s\)

Answer:

The angular momentum depends on both the angular velocity and the mass distribution of the object. You can change this angular momentum by exerting a torque (a twisting force)—but with no external torque, the angular momentum is conserved. Now getting back to the ice skater.