The effective spring constant of the bathroom scale is approximately 174,738 N/m.
The mass of the player is approximately 69.51 kg.
To determine the spring constant of the bathroom scale, you can use Hooke's law, which relates the force applied to a spring (F) to its displacement (x) and the spring constant (k):
F = -k * x
In this case, we know that the scale depresses 0.65 cm (which is equivalent to 0.0065 meters) under a load of 115 kg. We can use this information to find the spring constant (k):
115 kg * 9.81 m/s² = k * 0.0065 m
Now, solve for k:
k = (115 kg * 9.81 m/s²) / 0.0065 m
k ≈ 174,738 N/m
Hence, the effective spring constant of the bathroom scale is approximately 174,738 N/m.
Now, to find the mass of the player who depresses the scale by 0.39 cm (which is equivalent to 0.0039 meters), you can use Hooke's law again:
F = -k * x
Where:
F is the force exerted by the player's weight (in Newtons)
k is the spring constant (we just found it to be 174,738 N/m)
x is the displacement of the spring (0.0039 meters)
Now, solve for F:
F = -174,738 N/m * 0.0039 m
F ≈ -681.882 N
Since weight is the force due to gravity (F = m * g), where "m" is the mass of the player and "g" is the acceleration due to gravity (approximately 9.81 m/s²), we can find the mass of the player:
m = F / g
m = (-681.882 N) / (9.81 m/s²)
m ≈ -69.51 kg
The negative sign indicates that the player's weight is acting in the opposite direction of the scale's displacement.
Hence, the mass of the player is approximately 69.51 kg.
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Monochromatic light with a wavelength of 384 nm passes through a single slit and falls on a screen 86 cm away. If the distance of the first-order dark band is 0.22 cm from the center of the pattern, what is the width of the slit?
Answer in units of cm.
Assume that the porsche's maximum speed is 78.0 m/s and the police car's is 58.0 m/s. at the moment both cars reach their maximum speed, what frequency will the porsche driver hear if the frequency of the police car's siren is 440 hz? take the speed of sound in air to be 340 m/s.
What color band markings would be seen on a 2.2 k resistor? A. Black, black, orange B. Orange, red, red C. Red, red, orange D. Red, red, red
How much work does the electric field do in moving a proton from a point with a potential of +155 v to a point where it is -65 v ? express your answer in joules?
The electric field does -3.52 times 10⁻¹⁷ joules of work in moving a proton from a potential of +155 V to -65 V.
To calculate the work done by the electric field in moving a proton from a point with a potential of +155 V to a point with a potential of -65 V, you need to use the following formula:
Work (W) = q times triangle V, where q is the charge of the proton and triangle V is the change in electric potential (voltage).
The charge of a proton (q) is 1.60 times 10⁻¹⁹ C. The change in electric potential (triangle V) is the final potential minus the initial potential, which is (-65 V) - (+155 V) = -220 V.
So the work done by the electric field is:
W = (1.60 times 10⁻¹⁹ C) times (-220 V) = -3.52 times 10⁻¹⁷ J.
The negative sign indicates that the work is done by the electric field, not by an external force.
Which planet is most likely to have acid rain? A. Mercury B. Venus C. Mars D. Uranus
The heating curve of an ice-water mixture that is slowly heated to 125??C contains three sloped and two level portions. What do the two level portions in the graph represent?
A) heating
B) deposition
C) sublimation
D) phase changes
The energy source used to produce most of the electrical energy in the United States is _______? Can someone help me on this?,
Two children with masses of 22 kg and 40 kg are sitting on a balanced seesaw. if the heavier child is sitting 0.7 m from the center, at what distance from the center is the lighter child sitting? answer in units of m.
The distance from the center is the lighter child sitting is 1.4 m.
What is mass?A fundamental characteristic of an object, its inertia is quantified by its mass, which is a basic indicator of the volume of substance inside the thing. Because mass is such a fundamental quantity and is difficult to define in terms of another, definitions of it frequently appear circular.
It is possible to define every mechanical quantity in terms of mass, length, and time. The SI unit for mass, denoted by the letter m, is the kilogram. While mass is typically thought of as an immutable feature of an item, relativistic mass must be taken into account when traveling at speeds close to the speed of light.
Given:
Two children with masses of 22 kg and 40 kg are sitting on a balanced seesaw, the heavier child is sitting 0.7 m,
Calculate the force by both as shown below,
F = 22 × 9.8
F = 215.6
f = 40 × 9.8
f = 392
Calculate the distance as the seesaw is in equilibrium,
196x = 392 × 0.7
x = 274.4 / 196
x = 1.4 m
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TEST HELP PLEASE!! WILL GIVE MEDAL TO BEST ANSWER!!
1 When the air under the envelope is heated, the balloon lifts. Which of the following statements is true.
a. Hot air balloons use radiation to rise
b. Hot air balloons use conduction to rise
c. hot air balloons use convection to rise
d. hot air balloons use air resistance to rise
Is the answer answer C?,
Wendy makes a graphic organizer to help herself apply Ohm’s law to electric circuits.
Which formulas belong in the regions marked X and Y?
X: I = I1 + I2 + I3
Y: Req = R1 + R2 + R3
X: Req = R1 + R2 + R3
Y: I =
X: I = I1 = I2 = I3
Y: V = V1 + V2 + V3
X: I =
Y: V = V1 = V2 = V3
In a series circuit represented by Ohm's law, the correct formulas to use are I = I1 = I2 = I3 for region X and Req = R1 + R2 + R3 for region Y, indicating that current remains constant through components and resistances are additive.
Explanation:Wendy is working with Ohm's law and electric circuits and needs to know which formulas apply to regions marked X and Y in her graphic organizer. Ohm's law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit and is given by V = IR. When multiple resistors are present in a circuit, their total or equivalent resistance (Req) and the total current depend on whether they are arranged in series or parallel.
In a series circuit, the total current (I) remains the same through all the components, and the voltages across each component add up. Hence, I = I1 = I2 = I3 which would be the correct formula for region X. For region Y, in a series circuit, the equivalent resistance (Req) is simply the sum of all individual resistances, thus Req = R1 + R2 + R3 is the correct formula.
However, in a parallel circuit, the voltage across all components is the same and the currents through each component add up to the total current, which is represented by I = I1 + I2 + I3, but this does not apply to the original question.
Example of figurative language the toast jumped out of the toaster. What effect of the argument can go with the example of figurative language
The example of figurative language in the phrase "the toast jumped out of the toaster" is a metaphor. Using figurative language in an argument can make it more engaging and persuasive.
Explanation:The example of figurative language in the phrase "the toast jumped out of the toaster" is a metaphor. A metaphor is a figure of speech that compares two different things by saying one thing is another thing, without using the words "like" or "as". In this case, the toast is compared to something that jumps, which creates a vivid image and adds interest to the description.
The effect of using this metaphor in an argument could be to make the argument more engaging and memorable. By using figurative language, the writer or speaker can convey their message in a more creative and impactful way, capturing the attention of the audience and making the argument more persuasive.
Which of the following correctly lists the planets in the Solar System from the smallest to the largest in terms of diameter?
A. Mars, Mercury, Venus, Neptune, Uranus, Saturn, Jupiter, Earth
B. Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter
C. Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury
D. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Answer:
The answer in B
Explanation:
I did the test and doubled check with my teachers.
The deepest portion of the lithosphere is formed from
According to newton's 2nd law of motion, what is the relationship between mass and acceleration? provide an example to clarify your response.
The relationship between mass and acceleration according to Newton's second law of motion is that acceleration is directly proportional to the net external force and inversely proportional to the mass of the object. So, larger mass leads to smaller acceleration for the same applied force.
Explanation:According to Newton's second law of motion, the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass. This essentially means that the larger the mass of an object, the smaller its acceleration will be when a net external force is applied, due to the object's increased inertia. For example, if you try to push a car and a bicycle with the same amount of force, the car (which has a greater mass) will accelerate slower than the bicycle (which has less mass).
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A ball is thrown upward from the ground with an initial speed speed of 25 meters/second; at the same instant, a ball is dropped from rest from a building 15 meters high. After how long will the balls be at the same height?
When light is scattered while spreading out through the atmosphere, the light rays
Final answer:
Light scattering caused by the Earth's atmosphere results in the 'twinkling' of stars, polarization of light, and the blue color of the sky. The scattering leads to a blur and changing nature of the blur due to atmospheric conditions. Scattered blue light colors the sky and makes the Sun appear yellower.
Explanation:
When light rays spread out through the Earth's atmosphere, they undergo a process known as scattering. This can be compared to the way confetti is dispersed by the wind. As light from the stars enters our atmosphere, various air currents and atmospheric conditions alter their paths leading to a blurred image when viewed from Earth; this effect is often observed as the twinkling of stars. Interestingly, polarization by scattering also occurs, and the light from the sky can appear brighter or dimmer when viewed through polarized lenses like sunglasses due to this scattering effect.
The blue color of the sky is also a result of scattering. Molecules in the atmosphere scatter shorter wavelengths of light (blue) more than longer wavelengths (red). This preferential scattering causes the sky to appear blue and the sun to seem somewhat yellower than it would in space. Furthermore, the intensity of light diminishes as it travels farther from its source. The light from the sun travels such long distances that by the time it reaches Earth, its rays are essentially parallel, causing consistent scattering across the globe.
An ambulance siren sounds different as it approaches you than when when it moves away from you. what scientific term would you use to explain how this happens
D
A
A
D
B
D
just took on connections !!!!!
The source of the magnetic field on the Sun is _____.
a. liquid iron in the core
b. liquid metallic hydrogen in the core
c. flowing plasma
d. thermonuclear reactions
Answer:
C) Flowing plasma
The efficiency of a ramp is 75%. if the amount of work input is 240 j, what is the amount of useful work output?
Answer:
180
Explanation:
If the work input equals 240 then we follow the equation for work output.
Work output = (work input x efficiency)/100%
Work output = (240 x 75%)/100%
Work output = 180/100%
Work output = 180
Which two stimuli did John B. Watson associate in his infamous “Little Albert” experiment? A. a white lab rat and the boy’s mother B. fear and a loud noise C. a white lab rat and a loud noise D. fear and the boy’s mother
Answer:
C) a white lab rat and a loud noise
Explanation:
egde 2020
if a light ray strikes a flat mirror at an angle of 61 degrees above the mirrors surface, what is the angle of reflection in relation to the normal
Answer:
For any plane reflector, the angle of reflection is always equal to the angle of incidence.
We know that thelight ray at an angle of 61 degrees from above (i assume that those 61° are between the light ray and the surface of the mirror), so the angle with respect to the normal of the mirror will be the complementary angle A = 90° - 61° = 29°
This means that the incidence angle is equal to 29°, then, the reflection angle is also 29°.
Now, if the initial angle is with respect to the normal of the mirror, the reflection angle is equal to it, so the reflection angle is also 61°
A rocket, weighing 43576 N, has an engine that provides an upward force of 11918 N. It reaches a maximum speed of 713 m/s. For how much time must the engine burn during the launch in order to reach this speed? Call up positive.
Which feature of the sun extends into the corona but is anchored in the photosphere? Core Prominence Solar flare Sunspot
The answer is solar flare. Solar flares are commonly accompanied by coronal mass ejection. Solar flares are periods when the sun is suddenly brighter at a spot at its surface. This is due to the ejection of electrons, ions, and atoms (plasma clouds) accompanied by electromagnetic waves.
Answer: Solar flare
Explanation:
A solid object has a mass of 30 grams and a volume of 10cm3 what is the density of the object?
Materials having resistance changes as voltage or current varies are called:
What particles make up a plasma of hydrogen?
A) H+ only
B) H+ and e-
C) e- only
The Earth’s gravitational force that attracts the sun is __________ the sun’s gravitational force to attract the Earth?
A. less than
B. equal to
C. greater than
D. centrifugal
E. none of the above
A 50 kg astronaut ejects 100 g of gas from his propulsion pistol at a velocity of 50 m/s.what is his resulting velocity
Final answer:
Applying the conservation of momentum, the 50 kg astronaut ejecting 100 g of gas at 50 m/s in space will have a resulting velocity of 0.1 m/s in the opposite direction.
Explanation:
To calculate the resulting velocity of the 50 kg astronaut after ejecting 100 g of gas at a velocity of 50 m/s, we apply the principle of conservation of momentum, assuming a frictionless environment such as space. Before ejection, the astronaut and the gas are stationary, so their combined momentum is 0 kg*m/s. After the ejection, the momentum remains 0 kg*m/s, which means that the momentum gained by the astronaut is equal and opposite to the momentum of the ejected gas.
The mass of the ejected gas is 0.1 kg (100 g) and its velocity is 50 m/s, giving it a momentum of 0.1 kg * 50 m/s = 5 kg*m/s. To find the astronaut's velocity (v_astronaut), we use the equation:
Momentum of astronaut = - (Momentum of gas)
50 kg * v_astronaut = - (0.1 kg * 50 m/s)
This simplifies to:
v_astronaut = - (0.1 kg * 50 m/s) / 50 kg
Calculating this gives:
v_astronaut = - (5 kg*m/s) / 50 kg
So, v_astronaut = -0.1 m/s. The negative sign indicates the direction opposite to the ejected gas.
Therefore, the astronaut's resulting velocity is 0.1 m/s in the direction opposite to the direction of the ejected gas.
Which of the following waves have the lowest energy?
Gamma waves
Radio waves
Visible light
X-rays
Answer:
The answer is radio waves
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The slow, steady downhill flow of loose, weathered Earth materials is called A. flow. B. slide. C. creep. D. slump.