Answer:
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Explanation:
2. What was the main purpose of Title IX?
Answer:
Title IX of the Education Amendments Act of 1972 is a federal law that states: "No person in the United States shall, on the basis of sex, be excluded from participation in, be denied the benefits of, or be subjected to discrimination under any education program or activity receiving Federal financial assistance."
Explanation:
Si unit of thermal conductivity is
Answer: Watts
Explanation: In the International System of Units (SI), thermal conductivity is measured in watts per meter-kelvin (W/(m•k)).
While rowing in a race, John uses his arms to exert a force of 155 N per stroke
while pulling the oar 0.7500 m. How much work does he do in 25 strokes?
Answer:
Workdone = 2906.25J
Explanation:
Given the following data;
Force, F = 155
Distance, d = 0.75
Stroke, s = 25
Mathematically, work done is given by the formula;
Work done = force * distance * stroke
[tex] W = F * d * s[/tex]
Where,
W is the work done
F represents the force acting on a body.
d represents the distance covered by the body.
s is the number of strokes.
Substituting into the equation, we have;
[tex] Workdone = 155*0.75*25[/tex]
Workdone = 2906.25J
A ball rolling on the ground has what form of energy?
A. KE
B. Chemical
C. PE
D. None
Answer:
a kinetic energy
Explanation:
because it is moving
Zero is the freezing temperature of water on which temperature scale?
Kelvin
Fahrenheit
Pascal
Celsius
Answer:
Celsius. i think! I might be wrong
Al inicio de un paseo recorrerá una distancia de 200 km/h, los primeros 120 km lo hará a una velocidad constante de 60 km/h y el resto a una velocidad constante de 90 km/h,¿Cuánto tiempo en horas total durará el viaje?
Responder:
1 hora 20 min
Explicación:
Paso uno:
datos dados
Durante los primeros 120 km, se nos dice que la velocidad es de 60 km / h.
sabemos que velocidad = distancia / tiempo
por lo tanto, distancia = velocidad * tiempo
deja que el tiempo sea ty la velocidad sea s
distancia = s * t
distancia = 60t -------------------- 1
Segundo paso:
Durante los segundos 80 km, se nos dice que la velocidad es de 90 km / h.
sabemos que velocidad = distancia / tiempo
por lo tanto, distancia = velocidad * tiempo
deja que el tiempo sea ty la velocidad sea s
distancia = s * t
desatancia = 90t ------------------- 2
La distancia total recorrida es de 200 km.
entonces 200 = 60t + 90t
200 = 150t
t = 200/150
t = 1,3 horas
Por lo tanto, el viaje tendrá una duración de 1 hora y 20 minutos aproximadamente.
A soccer ball is kicked with an initial velocity 13 m/s at an angle of 35 degrees from the horizontal. What is the maximum height reached by the ball?
Answer:
The maximum height reached by the ball is 2.84 m
Explanation:
Given;
initial velocity of the soccer, u = 13 m/s
angle of projection, θ = 35°
The maximum height reached by the ball = ?
Apply the following kinematic equation, to determine the maximum height reached by the ball.
Maximum height (H) is given as;
[tex]H = \frac{U^2sin^2\theta}{2g} \\\\H = \frac{(13)^2(sin \ 35^0)^2}{2*9.8}\\\\H = 2.84 \ m[/tex]
Therefore, the maximum height reached by the ball is 2.84 m
how do pteropods get energy
Answer:
Pteropods are little mollusks (related to snails, slugs and squid) that drift around in ocean currents, feeding on nutrient-rich plankton. Their rich diet makes them delicious to many fish. Seals eat many fish, and sharks eat seals and fish, so there it is: not even 6 degrees of shark separation.
Explanation:
How do the individual forces compare when the rider experiences a sensation being lighter than his normal weight ? What is the acceleration direction when this occurs ?
Answer:
When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.
Explanation:
A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.
Two forces are acting on the person; the force of gravity and the upward normal force from the elevator.
When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight. N = mg + ma
When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight. N = mg - ma
However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight. N = mg
When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness. N = (mg - mg) = 0
Which has the most momentum?
Select one:
A. 100 kg at rest
B. 20 kg at 2 m/s
C. 5 kg at 50 m/s
D. 10 kg at 5 m/s
Answer: C
Explanation:
A: 100kg*0m/s (obviously not answer)
B: 20kg*2m/s (=40)
C: 5kg*50m/s (=250, safe bet this one is it)
D: 10kg*5m/s (=50)
5 kg at 50 m/s, with a momentum of 250 kg m/s has the most momentum.
Hence, the correct option is C.
To calculate momentum, we use the formula:
Momentum (p) = Mass (m) × Velocity (v)
Let's calculate the momentum for each option:
A. 100 kg at rest
Momentum = 100 kg × 0 m/s = 0 kg m/s
B. 20 kg at 2 m/s
Momentum = 20 kg × 2 m/s = 40 kg m/s
C. 5 kg at 50 m/s
Momentum = 5 kg × 50 m/s = 250 kg m/s
D. 10 kg at 5 m/s
Momentum = 10 kg × 5 m/s = 50 kg m/s
Therefore, 5 kg at 50 m/s, with a momentum of 250 kg m/s has the most momentum.
Hence, the correct option is C.
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El extremo de una cuerda se mueve de tal manera que las partículas de la cuerda emplean 0.25 segundos para producir una vibración. ¿Cuál es el periodo? Y ¿Cuál es la frecuencia de la vibración producida
Responder:
T = 0.25 segundos
f = 4 Hz
Explicación:
Paso uno:
datos dados
se nos dice que las partículas tardan 0,25 segundos en completar una vibración
por lo tanto, el período es de 0,25 segundos
¿Qué es un período de vibración?
Un período T es el tiempo necesario para que un ciclo completo de vibración pase por un punto determinado.
la expresión para el período se da a continuación.
T = 1 / f
¿Cuál es la frecuencia de vibración?
Básicamente, se refiere a la frecuencia con la que ocurren las vibraciones.
la frecuencia es una tasa, se expresa como la inversa del período
f = 1 / T
t = 1 / 0.25
f = 4 Hz
Which statement describes an action-reaction pair?
A. You push against a wall, and the wall applies a force to your
hands.
B. The Sun pulls on the Earth, and the Earth pulls on the Moon.
C. You push a book off the edge of a shelf, and the book falls to the
floor
G
D. You throw a ball straight up, and Earth's gravity pulls it downward.
You push against a wall, and the wall applies a force to your hands. (A)
which event is an example of melting?
Answer:
welding metal
Explanation:
Determine the magnitude of the force for each direction. A. Add the forces that are applied in the same direction. B. Subtract forces applied in the opposite direction
Answer:
A) R = F1 + F2
B) R = | F1 - F2 |
Explanation:
A) For forces acting in the same direction
we will add up the forces : lets assume the forces to be F1 , F2
Then the magnitude of the forces acting in the same direction will be
R = F1 + F2
B) For forces acting in the opposite direction
we will subtract the forces i.e. stronger force - weaker force . assuming the forces to be F1 , F2
Hence the magnitude of the resultant force = R = | F1 - F2 |
7. In what ways has science harmed us?
Answer: At several different levels, scientific awareness will enhance the quality of life, from the routine functioning of our daily lives to global issues. In energy, conservation, agriculture, health, transportation, communication, security, economics, recreation, and discovery, science informs public policy and personal decisions.
Explanation:
Hope This Helps! : )
surface?
What is the mass of an object that experiences a gravitational force of 700 N near the Earth's surface
Answer:
70kg
Explanation:
Given parameters:
Gravitational force = 700N
Unknown:
Mass of the person = ?
Solution:
The weight is gravitational force on the person and can be expressed as;
W = mg
m is the mass
g is the acceleration due to gravity = 10m/s²
So;
700 = m x 10
m = 70kg
HELP PLZ IM BEING TIMED!!
What is the vertical acceleration of a dart that is launched horizontally with an initial velocity of 2.3 m/s?
-9.8 m/s
2 0 m/s2
2.3 m/s2
9.8 m/s2
Answer:
-9.8
Explanation:
EDGE 2021
The vertical acceleration of a dart is equal to the negative of acceleration due to gravity (- g). The vertical acceleration of the dart is equal to -9.8m/s². Therefore, option (1) is correct.
What is the acceleration due to gravity?Acceleration due to gravity is the acceleration acquired by a body due to gravitational force. As gravity has both magnitude and direction, so it is a vector quantity. Acceleration due to gravity is expressed by the symbol 'g'. The SI unit of g is m/s² and the value of g (acceleration due to gravity) on the surface of the earth is 9.8 m/s².
Let us suppose a body with mass (m) is dropped from a height ‘h’ above the surface of the earth with mass (M), it starts to move downwards with an increase in velocity to the earth's surface.
The body starts to accelerate toward the earth’s center under the action of gravitational force which is at a distance ‘r’.
Then, ma = GMm/r²
a = GM/r²
Therefore, the value of the acceleration due to gravity (g) = GM/r2.
Any object freely falling to the surface of the earth has acceleration due to gravity is 9.8m/s².
If the object moves away from the surface of the earth then it experiences the gravitational pull of the earth. Therefore, the acceleration of dart vertically is equal to -g.
Therefore, the vertical acceleration of the dart is equal to -9.8m/s².
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3. The soccer kicker kicks a 2 kg football with a force of 68 N. How fast will the ball accelerate down the field?
m = _______
a = ________
Fnet = _____
Answer:
[tex]\boxed {\boxed {\sf m= 2 \ kg , \\a= 34 \ m/s^2, \\\F= 68 \ N}}[/tex]
Explanation:
The formula for force is:
[tex]F=m*a[/tex]
If we rearrange the formula to solve for a (acceleration), the formula becomes
[tex]\frac{F}{m} =a[/tex]
The force is 68 Newtons. Let's convert the units to make the problem easier later on. 1 N is equal to 1 kg*m/s², so the force of 68 N is equal to 68 kg*m/s².
The mass is 2 kilograms.
[tex]F=68 \ kg*m/s^2 \\m= 2\ kg[/tex]
Substitute the values into the formula.
[tex]\frac{68 \ kg*m/s^2}{2 \ kg} =a[/tex]
Divide. Note that the kilograms will cancel each other out (hence why we changed the units).
[tex]\frac{68 \ m/s^2}{2}=a[/tex]
[tex]34 \ m/s^2=a[/tex]
The acceleration is 34 meters per second squared.
The si unit of average speed is m.s. True or False. anyone who is right I will give him brainlist if you are sure
True
Explanation:
Average speed is a scalar magnitude as opposed to average velocity which is a vector. The unit of measurement in the International System (S.I.) of the average speed is the meter per second (m/s).
Which choice is not an example of a molecule? O3 NCl3 F H2O2
Answer:
The answer is F
Explanation:
F stands for Fluorine, which is an element and consists of one atom.
Answer:
f
Explanation:
i took quiz
Please can you solve it?How to find the complete displacement of a body in this case:
calculating the area under the graph by dividing it
into a triangles and rectangles
A2 = 0.5 × h × b
= 0.5 × 10 × 5 = 25
A1 = 0.5 × 10 × 15 = 75
A4 = 0.5 × 15 × 10 = 75
A4 = h × b = 10 × 35 = 350
total displacement = 25 + 75 + 75 + 350 = 525
A rock is thrown upwards at 13.5 m/s. How long does it take to fall back to the ground?
Which describes the positions on a horizontal number line?
Answer:
All points to the left of zero are negative numbers. All points to the right of the zero are positive numbers. Zero is generally considered the center of the number line since both positive and negative numbers (more specifically integers) are considered to go to infinity. (Negative infinity or positive infinity)
Explanation:
Whoops sorry I accidentally commented the first time
Carolina (600 N) runs up the stadium (10 meters high) in 9.14 s. How much power did Carolina expend?
i need help!
Which condition of the eye is most likely to be responsible for each of these problems? a: A student who can read the whiteboard from the back of the room but has to strain to read the print in a textbook and gets headaches while reading from a computer screen at home b: A science teacher who has never had eye problems before begins to find it easier to read books and newspapers when they are held further away
Answer:
B Is not a problem
But A is
Explanation:
its either he is long sighted
so he is able to read from far and not near so it's better he sees a doctor to get recommend glasses
how does the electric current of an AC generator differ from that of a DC generator ?
A- it flows through the permanent magnets
B- it is much stronger
C- it is much weaker
D- it constantly reverses direction
The difference between the AC and the DC is that the AC current is always reversing. Option D
What is a generator?We have to know that the term generator has to do with a device that can be used in the production of electricity. The principle upon which the generator works is the principle of the electromagnetic induction.
Now we know that when we have a DC generator, the current that it is able to supply can be found to be constant but in the case of the AC generator, there is a constant change since the direction is reversing.
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The electric current of an AC generator differs from that of a DC generator in that it constantly reverses direction.
The correct option is D.
What are AC and DC generators?A mechanical device known as an AC generator transforms mechanical energy into AC or alternating current electrical power. Periodically, the electrical current in an AC generator changes direction.
A mechanical device known as a DC generator transforms mechanical energy into DC or direct current electrical power. The electrical current in a DC generator flows in one direction.
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Un auto se mueve con velocidad constante de 20 m/s y la mantiene durante 20 s. Después se le aplica una aceleración constante y aumenta su velocidad a 40 m/s, recorriendo durante el cambio de velocidad una distancia de 200 m ¿Cuál es el tiempo empleado en el recorrido total?
Answer:
26.67 s
Explanation:
v = Velocidad final = 40 m/s
u = Velocidad inicial = 20 m/s
[tex]t_1[/tex] = Tiempo inicial = 20 s
[tex]t_2[/tex] = Tiempo empleado durante la aceleración
a = Aceleración
s = Desplazamiento del automóvil durante la aceleración = 200 m
De las ecuaciones lineales de movimiento tenemos
[tex]v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{40^2-20^2}{2\times 200}\\\Rightarrow a=3\ \text{m/s}^2[/tex]
[tex]v=u+at_2\\\Rightarrow t_2=\dfrac{v-u}{a}\\\Rightarrow t_2=\dfrac{40-20}{3}\\\Rightarrow t_2=6.67\ \text{s}[/tex]
El tiempo necesario para acelerar es 6.67 s
El tiempo total necesario para toda la ruta es [tex]t=t_1+t_2=20+6.67=26.67\ \text{s}[/tex].
Predict If you sit on a moving bus and toss a coin straight up into the air, where will it land?
Answer:
the same place you threw it from
Explanation
Why does the lens need to be thicker for viewing nearby objects?
Answer: To focus on a near object – the lens becomes thicker, this allows the light rays to refract (bend) more strongly. To focus on a distant object – the lens is pulled thin, this allows the light rays to refract slightly.
Explanation:
You are an astronomer on planet tirth, which orbits a distant star. it has recently been accepted that tirth is spherical in shape, though no one knows its size. one day, you learn that on the equinox your sun is directly overhead in the city of tyene, located 750 kilometers due north of you. on the equinox, you go outside in alectown and observe that the altitude of your sun is 87.0 ∘.
Answer:
The circumference of planet tirth is [tex]C = 90000 \ km[/tex]
Explanation:
From the question we are told that
The distance of tyene from the observer is [tex]d = 750 \ km[/tex]
The altitude of the sun from the equinox is [tex]\theta_s = 87.0^o[/tex]
Generally given that on the equinox your sun is directly overhead in the city of tyene , then the altitude of the tyene from the equinox is [tex]\theta_e = 90 ^o[/tex]
Generally the angular distance between tyene and the sun as observed from the equinox is mathematically represented as
[tex]\theta _d = \theta_e - \theta_s[/tex]
=> [tex]\theta _d = 90 -87[/tex]
=> [tex]\theta _d =3^o[/tex]
Generally the ratio of [tex]\theta _d =3^o[/tex] to [tex]360^o[/tex] which is the total angle in a circle is equal to the ratio of [tex]d = 750 \ km[/tex] to the circumference of the planet
So
[tex]\frac{\theta_d}{360} = \frac{750}{C}[/tex]
=> [tex]\frac{3}{360} = \frac{750}{C}[/tex]
=> [tex]C = 90000 \ km[/tex]