Answer:
2
Explanation:
wave length is the distance between corresponding points of two consecutive waves
3. hertz
A 1,680 kg satellite is in a circular orbit around Earth with a tangential speed of 6,578 m/s. What is the height of the satellite above the surface of the Earth?
Answer:
Recall that Earth’s radius is 6.38 × 106 m and Earth’s mass is 5.97 × 1024 kg.
Explanation:
Answer:
A- 2.7 on USA Test prep
Explanation:
What is the wavelength of a wave that is traveling at 343 m/s with a frequency of 1000 Hz
Answer:
[tex]343 \div 1000 = 0.343[/tex]
wavelength is equivalent to the velocity divided by the frequency
What is the source of heat for convection currents in the mantle layer of earth
Answer:
Magma from the core
Explanation:
...?
PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST The actual subject is Science but they dont have that as a option in pick a subject
If 2 people are on a bed and they are the same weight, and 1 of them gets off and the bed breaks who is responsible? Is it the person still on the bed or the person who got off?
Answer:
I would say the one who got up bc if he or she wouldn't have gotten up the bed wouldn't have broke
Explain why the "X" chromosome expresses more traits than the "y" chromosome.
Please answer :( I have a lot of homework to do today! If it’s good I’ll mark b. Links or st————-upidity will get reported! Please help:3
Explanation:
The X chromosome (females have 2 of them while males have 1) is five times larger than the Y chromosome and has 10 times the number of genes.
In scientific notation, 0.00074m can be written as 1- 0.74×10‐³m 2- 7.4×10-⁴m 3- 74×10‐⁵m 4- 740×10‐⁶m
Answer:
[tex]0.00074m[/tex] [tex]=[/tex] [tex]7.4*10^{-4}m[/tex]
Explanation:
Given
[tex]0.00074m[/tex]
Required
Express as scientific notation
The scientific notation of a number is: [tex]a * 10^{b}[/tex]
Where [tex]1 \le a \le 9[/tex]
This implies that:
[tex]0.00074m = 7.4 * 10^b[/tex]
Next, is to determine the value of b.
Count the number of point to move from the current point location to 7.4.
If the point moves backward, b will be negative, else b will be positive.
So:
[tex]0.00074m[/tex] [tex]b=-4[/tex]
Hence:
[tex]0.00074m[/tex] [tex]=[/tex] [tex]7.4*10^{-4}m[/tex]
A baseball sits motionless near first base on a baseball diamond. What statement best explains why the baseball remains motionless?
A. The forces acting on the baseball are all balanced.
B. There are no forces acting on the baseball.
C. The dirt is placing an unbalanced force on the baseball.
D. The force on the baseball is unbalanced due to gravity.
Answer:
B
Explanation:
There are no forces acting in the baseball
Sometimes hikers carry radio beacons so that search and rescue teams can find them in case of emergency. Some of these beacons transmit radio waves with a frequency of 300,000 Hz. (300kHz) What is the wavelength of these waves?
Answer:
1000 m
Explanation:
Given that,
The frequency of radio waves f = 300,000 Hz
We need to find the wavelength of these waves.
The formula to find wavelength is as follows :
[tex]c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{300000}\\\\\lambda=1000\ m[/tex]
So, the wavelength of these waves is 1000 m.
Definition: The energy transferred by a force to a moving object.
Answer:
Force applied
Explanation:
An object will remain at its state of rest unless a non zero for act on it
1-¿Que tipo de energía usa en su hogar para el alumbrado , la calefacción y artículos de entretenían, entre otros ? 2-¿ de que manera en su hogar o escuela tienen acceso a la energía eléctrica? 3- aparte de los componentes ¿ hay alguna diferencia en el funcionamiento de circuito eléctrico de una linterna y el de una casa ? 4-¿que ocurriría si el voltaje que proporciona la fuente de energía es menor que la requerida por la ampolleta ? ¿Y su es mayor? 5-es indispensable el interruptor para el funcionamiento del circuito eléctrico
Answer:
Explanation:
1.-Energía eléctrica ( electricidad ) proveniente de una fuente AC ( es decir de corriente alterna)
2.-Hay un proveedor de servicios que lleva la energía a las comunidades en general y en particular la lleva hasta mi casa y escuela. Se define como acometida eléctrica, la infraestructura que lleva la energía desde la red de distribución al tablero principal en el abonado. La acometida puede ser aérea o subterránea, y normalmente consta de tres conductores ( de los cuales dos son calibre AWG # 8 ( dos fases ) y uno AWG # 10 ( neutro ). Esta configuración permite tener: 120 y 240 (V) en servicio en la casa y suficiente capacidad para la carga eléctrica de una casa normal
3.-Si, el tipo de corriente. En el caso de una linterna se usan "pilas" o baterías de corriente directa ( que no varia en el tiempo), en la casa la corriente es alterna de 60 ciclos por segundo de frecuencia.
4.-Si el voltaje es menor en una medida importante la ampolleta no alumbra por cuanto si por ejemplo el voltaje nominal ( o de funcionamiento es 120 V y el voltaje suministrado es 50 V ese voltaje será insuficiente para hacer funcionar el circuito). Si el voltaje es mayor dígamos 240 V la ampolleta se quema.
5.-El interruptor nos asegura la maniobra a nuestra voluntad del circuito del cual forma parte. Es decir si tengo un circuito de alumbrado ( 1 bombillo y un interruptor ) ese interruptor me permitirá apagar y encender la luz cuando yo quiera.
Los breaker son "interruptores" son dispositivos de protección para caso de sobrecargas y/o cortocircuitos
How far is it between the cafeteria and the swimming pool
A.
length
B.
volume
C.
distance
D.
displacement
A machine raised a load of 360N through a distance of 0.2m. The effort, a force of 50N moved 1.8m during the process. Calculate the efficiency of the machine.
Select one:
a. 40%
b. 100%
c. 80%
d. 60%
Answer:
c. 80%
Explanation:
Given;
load raised by the machine, L = 360 N
distance through which the load was raised, d = 0.2 m
effort applied, E = 50 N
distance moved by the effort, e = 1.8 m
The efficiency of the machine is calculated as follows;
[tex]Efficiency = \frac{ 0utput \ work }{1nput \ work} \times 100\% \\\\Efficiency = \frac{Load \ \times \ distance \ moved \ by \ load }{Efort \ \times \ distance \ moved \ by \ effort} \times 100\%\\\\Efficiency = \frac{360 \times 0.2}{50 \times 1.8} \times 100\%\\\\Efficiency =80\%[/tex]
Therefore, the efficiency of the machine is 80%
If the driver slammed on the brakes, what could happen to the crate?
X-rays have so much energy they can go right through your ___ and ___.
Answer:
X-rays have so much energy they can go right through your muscles and fat.
Explanation:
There are actually more ways to fill in those two blanks... Different parts of the body absorb x-rays in varying degrees, but soft tissues (like skin, muscles, fat, and organs) allow most of the X-rays to pass through.
Is telekinesis real??? I really wanna start learning it!
Answer:
if you only have to control your chakra and know how to get all your vibes to pass it to objects and it takes time to practice
Based on the graph, describe how momentum changes with time for an object in free fall. If you can help, I would be so grateful.
Decribe the general shape of the graph.
Answer:
the results increase, positive
p me have no brain please help I just wanna get through the year
According to the law of conservation of mass, what is the mass of sodium oxide (Na20) formed in this reaction? 4Na 91.96 g 02 32.00 g 2Na 0 ?
A. 247.92 grams
B. 123.96 grams
C. 61.68 grams
D. 495.84 grams
Answer:
B. 123.96 grams
Explanation:
A sports car accelerates at 4.3 m/s2. If the car exerts a force of 4106 N, what is the mass of the sports car?
Answer:
954.88kg
Explanation:
F=ma
Given that,
F = 4106N
and a = 4.3m/s²
By rearranging the equation,
m = F÷a
m = 4106 ÷ 4.3
m = 954.88kg
You are sharing a house with a few roommates. One of them plays on the basketball team, and is exactly 200 cm tall. The heights of you and the other roommates are 188 cm, 175 cm, and 160 cm. You want to buy the minimum height mirror that will allow all of you to see your entire selves, when the mirror is mounted in a fixed position on the wall. Assume each person's eyes are at a level 95% of their height. How tall a mirror should you buy
Answer:
119 cm
Explanation:
Given heights : 200cm , 188 cm , 175 cm, 160 cm
since the eyes are at 95% level
95% of 200 cm = 190 cm
95% of 160 cm = 152 cm
hence the allowable height of mirror = 200 - ( 5 + 76 ) = 119 cm
and The mirror should be hung 75cm from the floor
the statement from which investigation is an example of repetition? *answer choices in picture*
Answer:
vestigation 4
Explanation:
Kamal, Kamala, Krishna invert a sum of RS= 30,000 on a business in the ratio 2 : 3 : 5. Find the each of their investment.
Answer:
Explanation:
Kamal, Kamala, Krishna invert in the ratio 2 : 3 : 5.
As 2+3+5 =10, their respective share is 2/10, 3/10 and 5/10.
Sum of investment = 30000Rs
Kamal's investment = 30000 * 2/10 = 6,000 Rs
Kamala's investment = 30000 * 3/10 = 9,000 Rs
Krishna's investment = 30000 * 5/10 = 15,000 Rs
Only the healthy foods we eat provide
energy to our body
true
false
Answer:
True
Explanation:
Yes absolutely the food which provede us energy is termed as healthy..
A 3.9 kg object is on top of a shelf that is 1.5 meters high. The object falls at a velocity of 9.2 m/s. Calculate the kinetic energy of the falling object
the answer is 165J
1/2×3.9×(9.2)^2 = 165J
A .001 kg bead slides without friction around a loop-the-loop. The bead is released from a height of 20.6 m from the bottom of the loop-the-loop which has a radius 7 m. The acceleration of gravity is 9.8 m/s [photo] What is its speed at point A ? Answer in units of m/s. Your answer must be within ± 5.0%
Answer:
11.37 m/s
Explanation:
We are given;
Mass; m = 0.001 kg
Initial velocity; v1 = 0 m/s (since it was released from rest)
Initial height; h1 = 20.6m
From the attached image of the bead in the loop, we can see that height at A; h2 = twice the radius = 2R = 2 × 7 = 14 m
g = 9.8
To solve for the speed at point, we will use formula for conservation of energy. Thus;
½m(v1)² + mgh1 = ½m(v2)² + mgh2
Divide through by m to get;
½(v1)² + gh1 = ½(v2)² + gh2
Plugging in the relevant values;
½(0²) + (9.8 × 20.6) = ½(v2)² + (9.8 × 14)
Rearranging, we have;
½(v2)² = ½(0²) + (9.8 × 20.6) - (9.8 × 14)
Simplifying, we have;
½(v2)² = 64.68
Multiply both sides by 2 to get;
(v2)² = 2 × 64.68
(v2)² = 129.36
v2 = √129.36
v2 = 11.37 m/s
10. A pitcher in a professional baseball game throws a fastball, giving the baseball
a momentum of 5.83 kg. m/s. Given that the baseball has a mass of 0.145 kg,
what is its speed?
Answer: 40.2m/sec
Work: v=p/m= 5.83kg/0.145k=40.2cm/sec
What type of energy is thermal energy? A. Sound energy B. Chemical energy C. Kinetic energy D. Nuclear energy
Answer:
kinetic energy
Explanation:
How fast is a 0.50 kg ball moving if it's kinetic energy is 400 j
Answer:
Correct 40 m/s
Explanation:
HELP pleaseee which nucleus completes the following equation?
Answer:
its D
Explanation:
i just got it correct on a. p. e. x. :)
