Suppose a bicycle wheel is rotated about an axis through its rim and parallel to its axle. Is its moment of inertia about this axis greater than, less than, or equal to its moment of inertia about its axle?.

The velocity of the rollercoaster going down the hill is equal to 5.270 m/s.

Given the following data:

To calculate the velocity of the rollercoaster going down the hill:

Mathematically, kinetic energy is calculated by using the formula;

\(K.E = \frac{1}{2} MV^2\)

Where:

Making V the subject of formula, we have:

\(V =\sqrt{\frac{2K.E}{M} }\)

Substituting the given parameters into the formula, we have;

\(V =\sqrt{\frac{2\times 25000}{1800} }\\\\V=\sqrt{27.7778}\)

Velocity, V = 5.270 m/s

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Answer:

1000 meters, 200 meters

Explanation:

Given: Vi = 100 m/s and a = -5 m/s^2

From uniformly accelerated equation:  v = Vi + a t

then substitute

0 = 100 -5 t

t = 20 seconds

to go from 100 to 0 at -5m/s^2

d = Vi (20) - (1/2)(5)(20)^2

d = 100 (20) - 2.5(400)

= 2000 - 1000

= 1000 meters to stop, runs 200 meters beyond the end of the runway into the harbor where he strikes a passenger ferry.

The centripetal force exerted on the earth by the sun is 3.56775 × 10²² N.

Mass of the Earth, m = 6 × 10²⁴ kg

The average distance between the Sun and the Earth is, r = 1.5 × 10⁸ km                                                                                                           .                                                                                                                   r = 1.5 × 10¹¹ m

The path of the Earth around the Sun is circular, with a circumference:

c = 2πr

 c = 2 × 3.1416 ×  1.5 × 10¹¹ m

 c = 9.42478 × 10¹¹ m

The Earth takes time of T = 365.25 days to complete one revolution around the Sun, that is to travel the distance of c.

T = (365.25 days) × (24hr/1day) × (60min/1hr) × (60s/1min)

T = 3.15576 × 10 ⁷s.

Thus the velocity of the Earth is,

v = c/T

v = (9.42478 × 10¹¹ m) / (3.15576 × 10 ⁷s)

v = 2.98653 × 10⁴ m/s

The centripetal force exerted on the Earth by the Sun is given by,

F = 2mv/r

F = 2× (6 × 10²⁴ kg) × (2.98653 × 10⁴ m/s ) /(1.5 × 10¹¹ m)

F = 3.56775 × 10²² N

Therefore, the centripetal force exerted on the earth by the sun is 3.56775 × 10²² N

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Adding more thermal energy to a slowly melting block of ice will cause the temperature of the ice to remain constant until it has completely melted. Once the ice has completely melted, the temperature of the liquid water will start to rise.

As we add a little more thermal energy to a slowly melting block of ice, the temperature of the ice will remain constant at 0°C until all of the ice has melted. This is because the added thermal energy is being used to break the bonds between the water molecules in the ice, causing it to change from a solid to a liquid.

Once all of the ice has melted, any additional thermal energy will cause the temperature of the water to increase. This process is known as latent heat of fusion, which is the amount of energy required to change a substance from a solid to a liquid at a constant temperature.

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To determine the time taken to travel to Los Angeles you should consider the distance traveled.

The displacement of an object is known as the change in position of the object.

It is also the shortest distance between the final position and initial position of an object.

Displacement is a vector quantity because it has both direction and magnitude.

Distance is scalar quantity that measures the space between two points. It is a scalar quantity because it has only magnitude.

To determine the time taken to travel to Los Angeles we consider the speed of the motion, and the distance traveled.

time of motion = distance traveled/speed

Thus, To determine the time taken to travel to Los Angeles you should consider the distance traveled.

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The clock would run too slowly in Camrose.

Since the period of the pendulum T = 2π√(L/g) where L = length of clock and g = acceleration due to gravity.

Now since g = 9.800 m/s² in San Francisco and g = 9.811 m/s² in Camrose, we see that g increases.

From the expression for the period T, since L is constant, we find that

T ∝ 1/√g

Since g increases, so, T would decrease.

Thus, the clock would run too slowly in Camrose.

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Answer:

Ultrasound imaging (sonography) uses high-frequency sound waves to view inside the body.

Explanation:

The resultant velocity of the plane has a magnitude  104.4  mph and direction    south of west .

The plane is flying south at a speed of  100  mph and is blown by a  30mps strong wind due west.

⇒  The angle between the direction of flight of plane and the direction of the wind is  90° .

⇒  By Pythagoras theorem, the resultant speed is

\(\sqrt{100^{2} +30^{2} } =\sqrt{10900}\) =104.4 mph

⇒  The resultant velocity of the plane has a magnitude  104.4  mph and direction    south of west

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The power input of 3hP might be sufficient and the coefficient of performance will be "3.93".

According to the question,

In order to maintain the dwelling at 70°F with,

The COP,

→ \(\beta \leq \ \beta_{max}\)

or,

→ \(\beta \leq \frac{T_c}{T_H-T_c}= \frac{530^{\circ} R}{(550-530)^{\circ}R}\)

                     \(= 26.5\)

or,

→ \(\frac{Q_{in}}{W_c} \leq 26.5\)

→  \(W_c \geq \frac{3000 \ Btu/h}{26.5}\times \frac{1 \ hP}{2545 \ Btu/h}\)

→  \(W_c \geq 0.445 \ hP\) (minimum required power)

hence,

The corresponding COP will be:

→ \(\beta = \frac{Q_c}{W}\)

      \(= \frac{30000}{3\times 2545}\)

      \(= 3.93\)

Thus the response above is correct.

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Answer:

speed?

Explanation:

give me more information

Answer:

there is no diagram, but i can try to help

Explanation:

strong winds bonding together (i.e hot and cold) help form the tornado, depending on the weather depends on how long it can go on, if more hot and cold are feeds into it, it will get faster and last longer. it is just like dust devils, it is wind and dirt mixing to make a tornado, the more wind and dirt the worst it will be

Minimum stream velocity necessary to transport quartz particle that is 0.1 centimeter in diameter in a stream is : 5.0 cm/s.

Velocity is the directional speed of object in motion as indication of its rate of change in position as observed from particular frame of reference  as measured by particular standard of time.

As, Q = V * A

given that the diameter of the particle = 0.1 cm

V is stream velocity , A is cross sectional area of stream and Q is stream flow

Given a particle with a diameter of 0.1 cm,

To determine the stream velocity we use a stadia rod to measure at least 5 meters down ( depth of stream ) three times and then take average value which will be used to determine cross sectional area of the stream but given that the width of the stream is not given the closet value to the stream velocity will be = 5.0 cm/s.

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Answer:

\(p = f \div a\)

\(p = \frac{185.6}{ {3}^{2} } = \frac{185.6}{9} = 20.6pa\)

Flow that is incompressible and has components with velocities of u=(ux/h), v=-(uy/h), where u and h are the characteristic velocities the acceleration vector\(-\frac{3^{2} }{2}\)

The movement is bi-dimensional.

Hence, velocity is equal to (dv/dx-du/dy)k, (0-v/h)k, and (-v/h)k.

As the speed is not zero, the flow is rotating.

Yet, the direction of velocity is -v/h.

Fluid particles rotate in a clockwise direction because of the negative velocity.\(-\int\limits^a_b {3x} \, dx\)

Given that v = 3xy + y is the y component

The continuity equation is expressed in differential form as follows for an incompressible flow:

Now, u = - \(\frac{du}{dy} =-\frac{du}{dy}\)

= - \(\frac{du}{dx} =-3x\)

\(-\int\limits^a_b {3} \, dx\)\(\frac{-3x^{2} }{2}\)

is the solution for the velocity's x component.

As a result, the velocity's x component is -\(\frac{3x^{2} }{2}\)

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Given:

The uses of LASER light

To find:

Which is not an application of LASER light

Explanation:

When cutting stainless steel or aluminium, LASER beams are used.

To remove warts, moles, sunspots, and tattoos in human bodies LASER lights are used.

LASER is used in communication also. Laser communication in space is the use of free-space optical communication in outer space.

One of the most important uses for lasers in astronomy is to reduce distortion on images taken with ground-based telescopes. So directly we cannot say that LASER is used for the calibration of telescopes.

Hence, calibration of telescopes is not an application of LASER light.

the person's phenotype would be red hair. phenotype is what you see on the outside, genotype is what the dna says. <3

Insulators are often defined as materials that do not allow electricity to flow through them. Option A is correct. Electrons in an insulator do not move readily.

Insulators are commonly employed in physics. Insulators are often defined as materials that do not allow electricity to flow through them.

Insulators are also referred to as poor electrical conductors. We may discover various instances of these insulators in our daily lives. Insulators include materials such as paper, glass, rubber, and plastic.

Insulators are often defined as materials that do not allow electricity to flow through them. Electrons in an insulator do not move readily

Hence option A is correct. Electrons in an insulator do not move readily

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Answer:

F = 0.112 N

Explanation:

To find the magnitude of magnetic force on the wire, you use the following formula:

\(|\vec{F}|=|i\vec{L}\ X\ \vec{B}|=iLBsin\theta\)   (1)

L: length of the wire = 200cm = 0.2m

i: current in the wire = 30 A

B: magnitude of the magnetic field = 0.055 T

θ: angle between the directions of L and B = 20°

You replace the values of L, i, B and θ in the equation (1):

\(|\vec{F}|=(30A)(0.2m)(0.055T)sin(20\°)=0.112N\)

hence, the magnetic force on teh wire is 0.112N

Answer:

410–460 g (14–16 oz) and is inflated to 65.7–68.8 kPa (9.5–10.0 psi).

Explanation:

Answer:

90 mAmps

Explanation:

V=IR

V/R = I

9 v / 100 ohm = .09 amps = 90 mAmps

I = V/Rt = 1.5/(100+100) = 1.5/200 = 0.0075 A ....or 0.0075*1000 = 7.50 mA

I = V/Rt

= 1.5/(100+100) = 1.5/200

= 0.0075 A ....or 0.0075*1000 = 7.50 mA

In a full electrical circuit, current is the rate at which electrons move past a certain point. Current = flow, at its most fundamental level.

The international unit for measuring current is an ampere (AM-pir), sometimes known as an amp. It describes how many electrons (sometimes referred to as "electrical charge") travel past a certain point in a circuit over a specified period of time.

In a circuit, a current of 1 ampere corresponds to the movement of 1 coulomb of electrons, or 6.24 billion (6.24 x 1018) electrons, through a single location in a second.

Therefore, I = 0.0075 A ....or 0.0075*1000 = 7.50 mA

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Answer:

sodium chloride

Explanation:

Sodium chloride is an ionic compound. The ions of the sodium chloride compound is sodium ion and chloride ion.  The sodium ion is cation while the chloride ion is an anion. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions.

The distance travelled by the airplane before takeoff is 1721 m.

2. The acceleration of the race car is 11.2 m/s², and Distance travelled by the car is 79.9 m.

3. The acceleration of the bullet is 1.62 * 10⁵ m/s².

The distance travelled by the airplane before takeoff is determined using the formula:

s = ut + ¹/₂at²

u = 0; a = 3.20 m/s², t = 32.8 s

s = 0 * 32.0 +  ¹/₂ * 3.2 * 32.8²

s = 1721 m

2. The acceleration of the race car is calculated as follows:

a = (v - u)/t

v = 46.1 m/s, u = 18.5 m/s, t = 2.47 s

a = (46.1 - 18.5)/2.47

a = 11.2 m/s²

Distance travelled, s = 18.5 * 2.47 + ¹/₂ * 11.2 * 2.47²

s = 79.9 m

3. The acceleration of the bullet is calculated as follows:

a = (v² - u²)/2s

where v = 0 m/s, u = 521 m/s, s = 0.840 m

a = (0² - 521²)/2 * 0.840

a = 161572.0238

a = 1.62 * 10⁵ m/s²

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Work needed = 23,520 J

Given

height = 12 m

mass = 200 kg

Required

work needed by the crane

Solution

Work is the transfer of energy caused by the force acting on a moving object  

Work is the product of force with the displacement of objects.  

Can be formulated  

W = F x d  

W = Work, J, Nm  

F = Force, N  

d = distance, m  

F = m x g

Input the value :

W = mgd

W = 200 kg x 9.8 m/s²x12 m

W = 23520 J

To deflect an asteroid, a few techniques can be employed, such as using a gravitational tractor, kinetic impactor, or a directed energy system. These methods alter the asteroid's trajectory, ensuring it does not collide with Earth.

There are several ways that an asteroid could potentially be deflected from its path. One approach would be to use a spacecraft to redirect the asteroid's trajectory by exerting a force on it through either gravity or physical contact. This could involve attaching a spacecraft to the asteroid and using thrusters to alter its course, or even using a kinetic impactor to strike the asteroid and push it off course.

Another approach would be to use a gravity tractor, which would involve positioning a spacecraft near the asteroid and using its own gravitational field to gradually pull the asteroid off course over a period of time. Ultimately, the best method for deflecting an asteroid would depend on a number of factors, including the size and trajectory of the asteroid, as well as the amount of time available before it potentially impacts Earth.

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The given statement 'A catalyst lowers the activation energy of a reaction, but does not affect the reaction rate' is false.

The positive catalyst alters the rate of reaction by lowering the activation energy of reaction such that the heat of the reaction remains unaffected. This is because it provides a new path for the reaction. However, the heat of the reaction is the same.

A catalyst is a chemical that influences a reaction's rate without being consumed by the final product. This process is known as catalysis.

Lower activation energy catalysts include:

A catalyst decreases the activation energy by changing the transition state of the process.

The reaction then proceeds according to a different mechanism than an un-catalyzed reaction.

The catalyst joins the reactants to produce a complex that offers a different pathway for the reaction with a lower activation energy. Both the forward and backward reflexes are impacted equally.

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The correct option is A.

Sour receptors help in the detection of the presence of acids in substances, whereas salt receptors help in the detection of sodium in substances.

A sour type of taste is considered as a quality of primary task that makes an innate rejection type of response in humans as well as in many other animals. Generally, Acidic stimuli are certain unique sources of a sour taste as whenever a  rejection response might serve a discouragement of ingestion of foods which is spoiled by microorganisms that produce acids. The mechanisms by which an acid excites receptor cells of taste (TRCs) are actually complicated by the variability of wide species and are within species that are apparently different kinds of mechanisms for the case of strong and weak acids in substances.

The presence of epithelial sodium channels mediates the mechanism of salt taste. Usually, these receptors are open, and whenever foods are ingested with a high concentration of salt, sodium starts to flow into the cell which causes depolarization. This change occuring in the membrane potential then opens to voltage-gated sodium as well as calcium channels. The calcium influx is in an increased state that causes releasing of serotonin which is filled by vesicles. The serotonin aids in the acting of afferent taste as by axon which causes depolarization and action potentials.

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Answer:

Left

Explanation:

The force is applied opposite of the acceleration.

To produce a force of 0.824 N on a charge of 17.1 µC injected perpendicular to a uniform magnetic field of 0.313 T, a speed of approximately 30.5 m/s is required.

The force experienced by a charged particle moving through a magnetic field is given by the equation F = qvB, where F is the force, q is the charge, v is the velocity, and B is the magnetic field strength.

Rearranging the equation, we have v = F / (qB). Substituting the given values, we get

\(v = 0.824 N / (17.1 \times 10^{-6 } C \times 0.313 T).\)

Simplifying the calculation, the velocity is approximately 30.5 m/s.

Therefore, a speed of approximately 30.5 m/s is required to produce a force of 0.824 N on the given charge when injected perpendicular to the magnetic field.

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