A plate drops onto a smooth floor and shatters into three pieces of equal mass. Two of the pieces go off with equal speeds v at right angles to one another. Find the speed of the third piece. Express your answer in terms of the variable v. Find the direction of the third piece. Assume the motion of the two pieces at right angles to one another is in the positive x and y directions.

The force exerted on the 0.25-kg baseball is 631 N.

To find the force exerted on the baseball, we can use the impulse-momentum theorem, which states that the impulse (change in momentum) of an object is equal to the force applied to it multiplied by the time over which the force is applied.

In this case, we can find the change in momentum of the baseball by subtracting its initial momentum from its final momentum:

Δp = p_f - p_i
Δp = (0.25 kg)(56.0 m/s) - (0.25 kg)(45.0 m/s)
Δp = 3.5 kg m/s

We also know the ball-on-bat contact time, t, is 0.040 s.

Now we can rearrange the impulse-momentum equation to solve for the force:

F = Δp/t
F = (3.5 kg m/s) / (0.040 s)
F = 87.5 N

However, this force is the force exerted by the baseball on the bat, not the force exerted on the baseball itself.

We can assume that the force exerted by the bat on the baseball is equal in magnitude but opposite in direction to the force exerted by the baseball on the bat. Therefore, the force exerted on the baseball is:

F = -87.5 N (negative because it is in the opposite direction)
F = -1 * (-87.5 N) (multiply by -1 to get a positive value)
F = 87.5 N

Note that we can also use the formula for average force to solve this problem:

F = mΔv / t
F = (0.25 kg)(56.0 m/s - 45.0 m/s) / (0.040 s)
F = 631 N

This gives us the same final answer as before, but it is a more direct way to find the force.

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Force, displacement, momentum, velocity and acceleration are  vector quantity among them.

The term "vector quantities" refers to physical quantities that have clearly defined definitions for both magnitude and direction.

As an illustration, consider a boy riding his bike in a north-east direction at a speed of 30 km/h. As a result, we can see that in order to define velocity, we need to know both its magnitude and its direction. As a result, it symbolizes a vector quantity.

To define force, displacement, momentum, velocity and acceleration, we need both magnitude and direction. So, they are vector quantity.

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The  answer is that a periodic wave transfers energy, only.

A wave is a disturbance that travels through a medium, transferring energy but not mass. As a wave travels through the medium, the particles of the medium oscillate back and forth, but they do not travel with the wave. The energy of the wave is transferred from particle to particle, but the particles themselves do not move with the wave. Therefore, the correct answer to your question is A.

In summary, a periodic wave transfers energy but not mass through the medium. This is an important concept to understand in many fields, including physics, engineering, and biology.

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A nylon rope tied with stockings together that can bear a maximum tension of 300N without breaking. The mass of the person who wants to elope is 61.2 kg. The smallest acceleration a with which the person can slide down the rope is 4.91 m/s².

The magnitude of the smallest acceleration a with which the person can slide down the rope is to be found out. Let’s calculate it.

To solve this question, we can use Newton’s second law of motion. The formula is

F = ma

Where,F is the force applied, m is the mass of the object, and a is the acceleration of the object.

Here, the force applied is the tension in the rope that the person will exert and the mass of the object is the mass of the person. Therefore, the formula becomes,

T = ma or a = T/m

Where,T = Maximum tension the rope can bear without breaking = 300 Nm = mass of the person = 61.2 kg

Now, putting the values in the formula,

a = T/m= 300/61.2= 4.91 m/s²Therefore, the smallest acceleration a with which the person can slide down the rope is 4.91 m/s².

Hence, the correct option is (B).

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Both on the part of the Earth that faces the Moon in a direct line and on the part of the Earth that faces the Moon in a straight line.

Because the moon's gravitational attraction is greatest on the side of Earth that confronts it, the point confronting the moon is created. High tide happens as gravity draws the water toward the moon.

It seems sense to conclude that the range of the semi - diurnal tides is greatest near the equator and diminishes toward the poles since, on average, the moon is directly above the equator.

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Answer:

the app your on now is great and can ask anything

Answer:

While waves that travel within the depths of the ocean are longitudinal waves, the waves that travel along the surface of the oceans are referred to as surface waves. A surface wave is a wave in which particles of the medium undergo a circular motion.

Explanation:

Are you satisfied or I should continue in the comments.

Answer:

Aristotle was blind, therefore could not see change in positions. Aristotle could see no detectable change in the positions of the stars, thought Earth was immovable.

Explanation:

Answer:

Acids break down fabrics and can cause burns if the acids are strong.

Explanation:

When working with acids, it is advisable for a scientist for wear a protective apron or lab coat because acids break down fabrics and can cause burns.

Acids are chemical substances that produces excess hydroxonium ions in solutions.

Answer:

C. Acids break down fabrics and can cause burns if the acids are strong.

Explanation:

i did the quiz on edg

Answer:

7.5 J

Explanation:

To answer the question given above, we need to determine the energy that will bring about the speed of 1 m/s. This can be obtained as follow:

Mass (m) = 15 Kg

Velocity (v) = 1 m/s

Energy (E) =?

E = ½mv²

E = ½ × 15 × 1²

E = ½ × 15 × 1

E = ½ × 15

E = 7.5 J

Therefore, to change the speed to 1 m/s, the employee must do a work of 7.5 J.

Answer:

Explanation:

The principle is that the slope of the line on a velocity-time graph reveals useful information about the acceleration of the object. If the acceleration is zero, then the slope is zero (i.e., a horizontal line). If the acceleration is positive, then the slope is positive (i.e., an upward sloping line).

The point of interest in the velocity time graph is the slope of the graph which represents the acceleration of the given moving body

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds², acceleration is defined as the ratio of velocity to time.

Only the constant acceleration is applicable to Newton's three equations of motion.

The acceleration of any item is represented by the slope of the velocity time graph.

The slope of the line on a velocity-time graph provides important details about the object's acceleration. The slope is 0 if the acceleration is zero. The slope is positive if the acceleration is positive and if the slope of the velocity time graph is negative the acceleration is negative

Thus, the point of interest in the velocity time graph is the slope of the graph which represents the acceleration of the given moving body.

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To find the distance between the object and image produced by a converging lens with a 35.5 cm focal length when the object is 45 cm from the lens, you can use the lens formula:

1/f = 1/do + 1/di

Where:
f = focal length (35.5 cm)
do = object distance (45 cm)
di = image distance

Step 1: Plug in the values for f and do:
1/35.5 = 1/45 + 1/di

Step 2: Subtract 1/45 from both sides:
1/35.5 - 1/45 = 1/di

Step 3: Find a common denominator and subtract:
(45 - 35.5)/(35.5 * 45) = 1/di
9.5/(35.5 * 45) = 1/di

Step 4: Take the reciprocal of both sides:
di = (35.5 * 45)/9.5

Step 5: Calculate di:
di ≈ 168.42 cm

So, the object and image produced by the converging lens with a 35.5 cm focal length when the object is 45 cm from the lens are approximately 168.42 cm apart.

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The Rigel is more warmer and brighter as compared to the sun due to its high temperature.

The Rigel is more warmer and brighter as compared to the sun due to its high temperature and its brightness is about 47,000 times more than that of the Sun. Because of its high temperature, the Rigel is white as compared to the sun.

So we can conclude that the Rigel is more warmer and brighter as compared to the sun due to its high temperature.

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Answer:

B. 15 m/s

Explanation:

p = m × v

480 = 32 × v

32v = 480

v = 480/32

v = 15 m/s

Answer:

B. 15 m/s

Explanation:

P=MV

480=32×v

v=15m/s

The real peak voltage is 120/0.707 = 170 V.

The peak voltage is the highest point or voltage value in any voltage waveform. A power quality issue arises when Pulse Width Modulation (PWM) devices, such as variable frequency drives, are added to a power system with a peak voltage equal to the square root of two times the RMS voltage. The peak voltage, for instance, if the RMS voltage is 85 V. The average voltage and maximum voltage of AC power coming from the wall are both about 110 V. Therefore, the real peak voltage is 120/0.707 = 170 V. The sinusoid's amplitude is divided in half by this. Peak-to-peak voltage (Vp-p), also known as the total amplitude, is 340 V, or twice the peak voltage.

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The photon energy of electromagnetic radiation with a wavelength of 465 nm is 4,2 x 10⁻¹⁹ J.

To determine the energy of the emitted light, we need a relationship to the wavelength of the light. In terms of the equation formula is

                                 E = hc/λ

Where h is Planck's constant and c is the speed of light and λ is the wavelength of light.

Planck's constant is 6.626 x10⁻³⁴ m² kg/s and the speed of light is 3x10⁸m/s. The wavelength is 465 nm = 465x10⁻⁹ m.

So,

E = hc/λ

E = (6.626 x10⁻³⁴)(3x10⁸)/465x10⁻⁹

E = 19.875 x 10⁻²⁶/465x10⁻⁹

E = 4,2 x 10⁻¹⁹ J

So, the energy of a photon is 4,2 x 10⁻¹⁹ J.

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Force is the product of mass and acceleration, the magnitude of the net force exerted on the frog as it leaps is 3.6 N

Force can be simply defined as a pull or push. It is the product of mass and acceleration. And it is measured in Newton.

Given that a 1.20-kilogram frog is at rest on the bank surrounding a pond of water. As the frog leaps from the bank, the magnitude of the acceleration of the frog is 3.0 m/s² . The magnitude of the net force exerted on the frog as it leaps will be

F = ma

Where

Substitute the two parameters into the formula.

F = 1.2 × 3

F = 3.6 N

Therefore, the magnitude of the net force exerted on the frog as it leaps is 3.6 N

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that's according to ma observation

(a) The magnitude of the electric field produced by a charge of 4.50 mC at a distance of 1.00 m can be calculated using Coulomb's law.

Coulomb's law states that the electric field strength (E) is directly proportional to the magnitude of the charge (q) and inversely proportional to the square of the distance (r) between the charge and the point of interest.

Mathematically, E = k*q/r^2, where k is the electrostatic constant. The magnitude of the electric field produced by a charge of 4.50 mC at a distance of 1.00 m is 4.05 x 10^6 N/C.

The magnitude of the electric field produced by a charge of 4.50 mC at a distance of 1.00 m can be calculated using Coulomb's law. Plugging in the values, we have E = (9 x 10^9 N m^2/C^2) * (4.50 x 10^-3 C) / (1.00 m)^2 = 4.05 x 10^6 N/C.

The magnitude of the electric field produced by a charge of 4.50 mC at a distance of 1.00 m is 4.05 x 10^6 N/C.

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Observation:
- Mr. Wilson was not wearing gloves while cooking, which is a violation of the company's safety procedures.
- The incident occurred because of the worker's inability to comply with the safety procedures.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace.
Methodology:
- The team also obtained copies of the safety procedures currently practiced by the kitchen staff for further analysis.
Findings:
- The root cause of the accident was the worker's failure to follow the company's safety procedures, specifically the requirement to wear gloves while cooking.
- The reasons for the accident include a lack of awareness about the importance of wearing gloves and a lack of enforcement of the safety procedures.
Conclusion:
- The incident could have been prevented if the worker had followed the company's safety procedures and worn gloves while cooking.
- There is a need for stricter safety guidelines and enforcement of personal protective equipment usage in the workplace to prevent similar incidents from occurring in the future.
Suggestion:
- The company should implement stricter safety guidelines and conduct regular training sessions for employees to reinforce the importance of following safety procedures.
- The company should also enforce the usage of personal protective equipment in the workplace and hold employees accountable for any violations.

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The  value in terms of 1m of oil is 1.25

To convert the pressure at a point from 1 meter of water to its equivalent value in meters of oil, we can use the following formula:

Pressure = height × density × gravity

Let's first find the pressure exerted by 1 meter of water.

1 g x 0.8 = 0,8

1 x g x 1m = 0.8 x g * h2

We are to solve for h2

h2 = 1 / 0.8

= 1.25

Hence tghe  value in terms of 1m of oil is 1.25

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Explanation:

Optics is a branch of physics that is the study of light and vision. ... The branch of physics dealing with the nature and properties of electromagnetic energy in the light spectrum and the phenomena of vision. In the broadest sense, optics deals with infrared light, visible light, and ultraviolet light.

Answer:

D. the universe began with an enormous explosion.

Explanation:

This theory states that the universe began as a single hot, dense, and small point. It then exploded, expanded, became less dense, and the temperature became cooler.

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(a) The support of K can be given by {0, 1, 2, 3, 4}.

(b) The set of events in which the aircraft is functioning can be given as follows: {K ≥ 1}, which means the aircraft is functioning if and only if at least one of its engines is functioning properly.

(c) Let's assume that the probability of each engine functioning properly is given by p. So, the probability of any particular engine malfunctioning or not functioning properly is (1 - p).

Since the aircraft is functioning if and only if at least one of its engines is functioning properly, the probability of system reliability can be calculated using the following formula:

P(K ≥ 1) = 1 - P(K = 0)

Since each engine functions independently of each other, the probability of each engine malfunctioning can be multiplied together. Thus, we have:

P(K = 0) = (1 - p)^4

Then,

P(K ≥ 1) = 1 - P(K = 0)

= 1 - (1 - p)^4

Therefore, the probability of the aircraft functioning, which represents system reliability, is given by 1 - (1 - p)^4.

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The value of the inductance in this RLC series circuit is approximately 0.01336 H (or 13.36 mH).

To calculate the value of the inductance in an RLC series circuit with a given phase angle, capacitive reactance, and resistor, we can use the following formula:

tan(θ) = Xc / R

where:

- θ is the phase angle (given as 40.0°)

- Xc is the capacitive reactance (given as 40 Ω)

- R is the resistance (given as 100 Ω)

Let's substitute the given values into the formula and solve for Xc:

tan(40.0°) = 40 Ω / 100 Ω

Using a scientific calculator, we can find the value of tan(40.0°) to be approximately 0.8391.

0.8391 = 40 Ω / 100 Ω

Now, let's solve for the inductive reactance (XL):

XL = tan(40.0°) * R

  = 0.8391 * 100 Ω

  ≈ 83.91 Ω

Since the inductive reactance is given by the formula XL = 2πfL, where f is the frequency and L is the inductance, we can rearrange the formula to solve for L:

L = XL / (2πf)

Given that the frequency (f) is 1000 Hz, let's substitute the values and calculate the inductance (L):

L = 83.91 Ω / (2π * 1000 Hz)

 ≈ 0.01336 H

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The pressure exerted on the ground by the box of mass 5 kg is 0.98 N/m².

Pressure is defined to be the amount of force exerted per area acting on the surface of a body.

To calculate the preesure exerted on the ground, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the pressure exerted on the ground is 0.98 N/m².

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C. A heat pump absorbs 100 J of heat from a cool reservoir and releases 120 J of heat to a hot reservoir.

In order to operate, a heat engine must reject some of the heat it receives from the high-temperature source to a low-temperature sink.

A heat engine that violates the second law converts 100 percent of this heat to work. This is physically impossible. This heat engine violates the second law of thermodynamics.

The second law can also be stated as no heat engine can have a thermal efficiency of 100 percent.

The thermal efficiency of a heat engine is defined as the ratio of the work output to the heat input:

Clearly, if the thermal efficiency of a heat engine is 100 percent,

Qin=Wout

If the second law precludes a heat engine from having a thermal efficiency of 100 percent. A heat engine is a device that converts a portion of the heat supplied to it from a high-temperature source into work. The remaining heat is rejected to a low-temperature sink.

Therefore:

A heat pump absorbs 100 J of heat from a cool reservoir and releases 120 J of heat to a hot reservoir.

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Answer:

i believe that the answer is 4.661764706 seconds