what is the speed of a wave whose frequency and wavelength are 500.0 hz and 0.500 m, respectively?

Given:

The initial height of the ball, h=1.6 m

The initial speed of the ball, u=14 m/s

To find:

a) The time of flight of the ball.

b) The range of the ball.

Explanation:

As the ball is thrown horizontally, the ball will have no vertical component of the initial velocity. The velocity of the ball is completely horizontal.

Thus the vertical component of the initial velocity of the ball is u_y=0 m/s.

The horizontal component of the initial velocity of the ball is u_x=u=14 m/s.

a)

From the equation of motion,

Where g is the acceleration due to gravity and t is the time of flight of the ball.

On substituting the known values,

b)

The range of the ball is given by,

On substituting the known values,

Final answer:

a) The time of flight of the ball is 0.57 s

b) The range of the ball is 7.98 m

Answer: can I have answer choices

Explanation:

The statements that describe density are the statement 3 and statement 5.

Statement 3 is correct because density does not have a SI unit. It is derived from the units of mass and volume which are kg and m³ respectively. The unity of density is km / m³. Statement 5 is correct because if an object has lower density than the liquid in which it is present, the object will float.

Statement 1 is incorrect because density is a physical property. It provides a relationship between two physical properties i.e., mass and volume. Statement 4 is incorrect because density does not remain constant. When an object is heated its density decreases. Statement 4 is incorrect because density is mass divided by volume and not the sum between those two quantities.

Therefore, the statements that describe density are the statement 3 and 5.

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Answer:its the 2, 3, and 5th statement

Explanation:

Answer:

Stretch is 0.816 m

Explanation:

Data :

  Force  = F = 10 N

 Spring constant = k = 15 N/m

By using formula

      F =  - kx²

Where is displacement or stretch

    x² = F/-k  = 10/15 = 0.667

   x ² = 0.667   ⇒ x=√o.667

         x = 0.816 m

1. The development of nervous system begins as soon as fertilization. 2. Homeostasis is better understood as balance of flow in substances that sustain life. 3. Regulation means to control something by rules. 4. cerebrum. 5. Cerebrospinal fluid serves as a cushion to minimize damage as a protective measure of the nervous system.

1. The development of a child's nervous system begins as soon as fertilization occurs. The nervous system is one of the earliest systems to develop in the embryo and plays a crucial role in the overall development and functioning of the body.

2. Homeostasis refers to the balance of flow in the substances that sustain life. It involves the regulation and maintenance of stable internal conditions necessary for optimal functioning of the body. This balance ensures that various physiological processes, such as body temperature, blood pressure, and pH levels, remain within a narrow range. 3. Regulation means to control or direct something by rules. In the context of the nervous system, regulation refers to the control and coordination of various bodily functions to maintain homeostasis. It involves the communication and integration of signals within the nervous system to initiate appropriate responses to internal and external stimuli.

4. The part of the brain that handles incoming and outgoing messages is the cerebrum. It is the largest part of the brain and is responsible for higher-order functions such as perception, cognition, and voluntary movement. The cerebrum processes sensory information and sends motor commands to initiate appropriate actions. 5. Among the protective measures of the nervous system, cerebrospinal fluid serves as a cushion to minimize damage. Cerebrospinal fluid surrounds and protects the brain and spinal cord, acting as a shock absorber. It provides a physical barrier and helps distribute nutrients, remove waste, and regulate pressure within the central nervous system.

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Well, you didn't tell us what the unit of the 53.14 is.  But whatever it is, the force of friction is the same 53.14 of them.

The only way the box can move with constant velocity is if the forces acting on it all add up to zero. So the force of friction to the left, holding it back, must be exactly equal to the force pushng it forward to the right.

Notice that none of this depends on the mass of the box, or WHAT the constant velocity IS.  None of that information matters, or makes any difference. It's only included in the question to confuse and distract us.  

The parts of the electromagnetic are designated as follows, from to the lowest energy: infrared photons, X-rays, ultraviolet light, visible light, infrared ( ir, and radio waves.

With normal use, the typical microwave oven lasts around seven years, and significantly less with heavy use and bad maintenance. As they become more dependent on it to reheat snacks and leftovers or to defrost meals, a large family may discover that they need to replace their appliance every four to five years.

A convection microwave includes extra characteristics in addition to being able to carry out all the tasks that a standalone microwave can. Foods can be grilled, baked, roasted, browned, and even crisped in convection microwaves.

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Answer:

In waves distance is measured by wave length  and time is measured by frequency or period.

velocity ratio=wave length multiply by frequency.

HENCE, if the same wave travels for 2 econds its frequency will be 2Hz.

Explanation:

Answer:

Compasses are mainly used in navigation to find direction on the earth. This works because the Earth itself has a magnetic field which is similar to that of a bar magnet. The compass needle aligns with the Earth's magnetic field direction and points north-south. Also, In a magnet all the domains are oriented in the same direction. In the case of a nail, the domains can be aligned in the same direction causing the nail to become magnetic. That is because if you hang a bar magnet from a thread, the north pole will point to magnetic north. When you bring one north pole close to another north pole they repel each other. You can feel the two magnets pushing each other apart.

Answer:

7 1/2m/s/s

Explanation:

37-22=15

15/2=7 1/2

Answer:An object has balanced forces acting on it and constant velocity.

Explanation:

Concavelenses have negative focal length and tlways form virtual images.

The focal length is negative as it lies on the left side of lenses.

the magnitude of the average force required to stop the sled is 16 times the velocity of the sled in meters per second.

To calculate the magnitude of the average force required to stop the sled, we can use the concept of impulse and momentum. The equation that relates these two concepts is:

FΔt = mΔvwhere F is the force, Δt is the time interval during which the force is applied, m is the mass of the object, and Δv is the change in velocity.Let's assume that the sled was initially moving with a certain velocity v and that you want to bring it to a complete stop.

The final velocity of the sled will be 0 m/s. Since the mass of the child and sled is 32 kg, we can use the following equation to calculate the average force required to stop the sled:

FΔt = mΔvF Δt = (32 kg) (- v)F Δt = -32v

To determine the value of F, we need to know the time interval Δt during which the force is applied. If we assume that it takes 2 seconds to bring the sled to a stop, then:

F (2 s) = -32vF = -16v Newtons

Therefore, the magnitude of the average force required to stop the sled is 16 times the velocity of the sled in meters per second.

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Higher Power Efficiency  and Eliminates Risk of Compressor Breakdown

If a  500 kg crate is lifted by a crane and accelerated upward at 2 m/s/s, then the tension force in the cable pulling up on the crate would be 1000 Newtons.

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

As given in the problem if a  500 kg crate is lifted by a crane and accelerated upward at 2 m/s/s , then we have to find out what the tension force in the cable pulling up on the crate.

The tension on the cable = 500 × 2

                                          = 1000 N

Thus, If a  500 kg crate is lifted by a crane and accelerated upward at 2 m/s/s, then the tension force in the cable pulling up on the crate would be 1000 Newtons.

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The net force on the sled is 400 N.

The net force on the sled is the sum of all the forces acting on the sled. In this case, the only forces acting on the sled are the horizontal force of 200 N applied by the athlete and the force of friction acting on the sled.

The force of friction is given by the equation:

F_friction = μ × F_normal

where F_friction is the force of friction, μ is the coefficient of friction between the sled and the surface it is on, and F_normal is the normal force acting on the sled.

The normal force is the force exerted on an object by a surface that is perpendicular to the surface. For an object at rest, the normal force is equal to the weight of the object. In this case, the weight of the sled is 50 kg × 9.8 m/s² = 490 N.

Plugging the values for the coefficient of friction, the normal force, and the applied force into the equation gives us the following:

F_friction = μ × F_normal = μ × 490 N = 200 N

The net force on the sled is the sum of the horizontal force applied by the athlete and the force of friction:

F_net = F_horizontal + F_friction = 200 N + 200 N = 400 N

Therefore, the net force on the sled is 400 N.

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Answer: It’s A

Explanation:

Answer:

The mechanical advantage of a machine is always less than its velocity ratio.It is because mechanical advantage decreases due to the friction and weight of moving parts of the machine, but the velocity ratio remains constant.

Answer:

True its got to be true

Explanation:

how else does a hoverboard float lol

Answer:

It's true

Explanation:

So true..

Answer:

Hello, I believe it would have a negative charge considering protons have a positive charge while elctrons have a negative charge

Explanation:

If the sun had four times its current mass and the Earth orbited it at the same distance, the length of a year on Earth would remain the same.

The length of a year is determined by the time it takes for a planet to complete one orbit around its star. In this scenario, if the sun's mass increased fourfold while the Earth maintained its current distance from the sun, the gravitational force acting on the Earth would also increase. However, the Earth's orbital speed would also increase to compensate for the stronger gravitational pull.

According to Kepler's third law of planetary motion, the square of the orbital period (T) is proportional to the cube of the average distance between the planet and the sun (r). Mathematically, it can be expressed as T^2 = k*r^3, where k is a constant.

Since the average distance (r) remains the same in this scenario, the only variable that affects the orbital period (T) is the mass of the sun. However, the increase in the sun's mass is counteracted by the increase in the Earth's orbital speed, resulting in the same length of a year on Earth as it currently is.

Therefore, the length of a year on Earth would remain the same, despite the increase in the sun's mass, assuming the Earth's distance from the sun remains unchanged.

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Answer:

In reality, the filament gets so hot it in a real sense bubbles off molecules and electrons. Now and again this material gathers as a dull spot at the highest point of the bulb. Eventually, the filament falls apart, gets frail, and breaks, subsequently finishing the life of the light. Lights radiate light by siphoning an electric flow through a dainty tungsten fiber. The filament warms and emits light. Over the long haul, the filament oxidizes and turns out to be increasingly fragile, until it splits up and the bulb goes out. ... Tungsten picks up obstruction as it warms.

Hope this helped :)

Answer:

get help with your work

try understand your work

ask your teacher for assistance or class

or maybe cheat but understand the work first if you wanna

The density of a cube is 2 g/cm3. whose mass is 2 g and volume is 1 cm.

Density may be defined as a type of physical quantity that significantly involves the measurement of quantity or mass per unit of volume in a particular substance. It is generally the quantity per unit of space.

It determines the area occupied by any three-dimensional object to thing. While representing the density, the symbol most often used for density is ρ although the Latin letter D can also be used.

According to the question,

The mass of a cube = 2.0 g.

The volume of a cube = 1.00 cm.

The density of a cube = ?

The formula for calculating density is as follows:

                     = 2.0 g/1.00 cm. = 2 g/cm3.

Therefore, the density of a cube is 2 g/cm3. whose mass is 2 g and volume is 1 cm.

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the distance covered by the lady during her morning walk can be calculated as 2m in the first 2 seconds, 24m between 2 seconds and 10 seconds, and 10m in the last 2 seconds.

The speed - time graph provided gives us information about the motion of a lady during her morning walk in the park. To calculate the distance covered by her, we need to analyze the graph in terms of the time intervals mentioned.
(a) In the first 2 seconds, the lady's speed is constant at 1 m/s. Therefore, the distance covered by her can be calculated as follows:
Distance = Speed x Time = 1m/s x 2s = 2m
(b) Between 2 seconds and 10 seconds, the speed of the lady is increasing linearly from 1m/s to 5m/s. To calculate the distance covered by her, we need to find the area under the graph between these two time intervals. This can be calculated as the area of a trapezium:
Distance = 1/2 x (Sum of parallel sides) x (Height)
Distance = 1/2 x (1m/s + 5m/s) x (10s - 2s)
Distance = 1/2 x 6m/s x 8s
Distance = 24m
(c) In the last 2 seconds, the lady's speed is constant at 5m/s. Therefore, the distance covered by her can be calculated as follows:
Distance = Speed x Time = 5m/s x 2s = 10m.

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Answer:

Vf=20m/s

Vi=10m/s

a=2m/s^2

t=?

Vf=Vi+at

a=Vf-Vi/t

t=Vf-Vi/a

t=20-10/2

t=10/2

t=5seconds.

Answer:

ATP

During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that transform glucose. Much more ATP, however, is produced later in a process called oxidative phosphorylation.

Explanation:

have a nice day.

The energy that is transferred in this time is E = 1.365 J.

To calculate Charge using formula,

Q = I x t

Q = 0.13A x 35 s

Q = 4.55 C

To calculate energy transferred,

E = Q x V

where,

Q is charge

V is potential difference

So by given values,

E = 4.55  x 0.30

E = 1.365 J

In order to perform work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is a quantitative property. Energy is a conserved resource; according to the law of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.

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Answer:

\(5,480\:\text{N}\)

Explanation:

The formula for work is given by \(W=F\Delta x\), where \(F\) is the force applied over a distance of \(\Delta x\).

Plugging in given values, we get:

\(16,700=F\cdot 3.05,\\F=\frac{16,700}{3.05},\\F\approx \boxed{5,480\:\text{N}}\)(three significant figures).

A flat coil with 200 turns and a cross - section area of 300 should oscillate at 7.1 Hz.

Most likely, you've hear of someone who has a magnetic personality. When someone or something has magnetism, it has a remarkable capacity for attraction. In our everyday interactions, we frequently attract individuals who are the most like ourselves.

Stainless steel, iron, nickel, cobalt, as well as several rare earth metals are a few examples for magnetic materials. A magnetic field weakly repels diamagnetic materials like gold or copper. A magnetic field has a weak attraction for paramagnetic materials as calcium and aluminum.

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