Answer:
Option c is correct v = 721 km/h θ = 3.2°
Explanation:
In pic is further explanation: A triangle means division
The magnitude of the velocity of the plane can be found by calculating the resultant of the two velocities:
R= [tex]\sqrt{(720km ÷ h^)^2 + (40km ÷ h)^2) = 721.1 km ÷ h}[/tex]
The direction can be found as follows:
0 = tan^-1 (720km ÷ h/40km ÷h) = 86.8
where 720 km/h represents the velocity towards north, while 40 km/h represents the velocity towards west, so the angle is measured with respect to east. Therefore:
the direction is 86.8*north of west
(Hope this helps can I pls have brainlist (crown)1
Answer:
See image
Explanation:
Plato
After turning off the television, you approach it. As you get close, but not touching it, the hairs on your arm start to stand up. This is an excellent example of static charge built up by
Answer:
electricity duh
Explanation:
Aluminum foil crunched between teeth with gold fillings (which one is negatively charged and which one is positively charged?)
Answer:
Aluminum foil is negatively charged and gold fillings are positively charged.
Hope this helps :)
Robert is pushing a 2-kg box by 6 N. What is the acceleration of the box?
[tex]\\ \sf\longmapsto F=ma[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{F}{m}[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{6}{2}[/tex]
[tex]\\ \sf\longmapsto a=3m/s^2[/tex]
[tex]a = f \div m[/tex]
A= Acceleration=?F= Force = 6 N( Newton)M= Mass = 2kg[tex]a = 6 \div 3 \\ a = 3[/tex]
Hence, A is [tex]3m/s^2[/tex]the game in the suburbs and rural areas of the Philippines is/are called_____??
Answer:
Games such as Patintero, Tumbang Preso, Piko, Sipa, Turumpo, and many others, are still played daily in neighborhoods.
Explanation:
Hope this helps... Maybe
Look at the figure below and calculate the length of side y.
A. 8.5
B. 17
12
y
C. 6
O D. 12
45
Х
Answer:
I want to say a because you want to subtract and simplify
A motorcycle travels 90.0 km/h. How many seconds will it take the motorcycle to cover 2.10 x 103 m?
Answer:
The time taken is 84 seconds, please give the brainliest award would be much appreciated.
A driver spotted a police car and he braked from a speed of 100 km/h to a speed of 80 km/h during a displacement of 88 m at a constant acceleration? What is that acceleration, and how much time is required for the given decrease in speed?
Answer:
Explanation:
100 kph = 27.8 m/s
80 kph = 22.2 m/s
v² = u² + 2as
a = (v² - u²) / 2s
a = (22.2² - 27.8²) / (2(88))
a = -1.578282828...
a = -1.58 m/s²
t negative sign means the acceleration opposes the initial velocity.
t = Δv/a
t = (22.2 - 27.8) / -1.57828
t = 3.52 s
Help on these two thanks
Answer:
8. Friction
9. Net force
Explanation:
Hope this helps you. Have a nice day. :)
4. In which of the following circuits will the bulb glow?
a) switch ON, a connecting wire broken
b) switch OFF
c) switch ON, no broken wire
d) switch ON, one of the wires replaced by a
rubber band
Answer:
I believe is C.
Explanation:
its quite obvious:)
PLEASE HELP!!
What process is illustrated in the figure?
Answer: A
Explanation:
Explain what would happen if an ebonite rod charged with fur is brought together with an acetate rod charged with silk
Answer:
The ebonite becomes negatively charged, and the fur becomes positively charged.
Explanation:
When an ebonite rod is rubbed against animal fur, some of the electrons from atoms of the fur are transferred to the rod.The ebonite becomes negatively charged, and the fur becomes positively charged.(a) A positive charge (+) and a negative charge (–) attract each other. (b) Two negative charges repel each other. (c) Two positive charges repel each other.
1. A bicyclist travels for 1.5 hours at an average speed of 23 km/h. How far does the bicyclist travel
in that time?
Explanation:
23 km/hr x 1.5 hrs = 34.5 km
34.5 km = 34500 meters
En el diseño de una sesión de aprendizaje, la profesora Patricia, tiene como propósito de aprendizaje: Aplica sus habilidades motrices generales en la práctica de juegos diversos. ¿Cuál es el nivel de aprendizaje en que se encuentran sus estudiantes en relación con el propósito de aprendizaje?
Answer:
im in hardvard dont cheat get amzing grades if you want to go here
Explanation:
Earth Atmosfear is uniqe amongst the planets and is able to support life because it contains a large amount of __?
A. oxygen
B. helium
C. Methane
D. Carbon Dioxide
Answer:
A
Explanation:
The abundance of oxygen in our atmosphere and the presence of liquid water on the surface of our planet makes our "Pale Blue Dot" stand out in contrast to the other planets in the solar system — a unique and fragile home for life.
Help me with these questions pleaseeee!
What are the similarities between coral reefs and costal ecosystems
Answer:
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. ... Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral.
Coastal oceans are commonly defined as the areas from the shoreline to the outer edge of the continental margin. They connect the continents to the open ocean and serve as a link for transporting organic and inorganic, natural and anthropogenic material from land to sea.
Coastal oceans in tropical areas have similar characteristics to their temperate counterparts. ... Coral reefs are biologically diverse and rich habitats that occur in relatively nutrient-poor environments along coastlines. Areas that have too many nutrients often harbor too much algal growth to sustain coral growth.,
Explanation:
HELP ASAP
Newtons three laws of motion: describe the ______ between an object and the forces acting upon it, and it's motion in_______ to those forces
Explanation:
Laws of Newton are
An object remains at its position of rest or motion until or unless any external force applied.Force=Mass×Acceleration.The initial momentum and final momentum remains same.2
8
1 point
What is the name of the element with 2 energy levels and 6 valence electrons?
Sulfur
Oxygen
Barium
Chromium
G
9
1 point
Answer:
oxygen is the right answer.
Suppose you take a trip that covers 490 km and takes 1 hours to make. Your average speed is
O 35 km/h
O 490 km/h
O 70 km/h
O 980 km/h
Answer:
B
Explanation:
490km/h
490km/1h
490000/3600
note: 1h= (60×60)=3600
hope it help??
An astronaut drops a hammer from 3.0 meters above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 meters per second2, how long will it take for the hammer to fall to the Moon’s surface?
Distance = (1/2 acceleration) · (time)²
3 m = (0.81 m/s²) · (t²)
t² = (3m / 0.81 m/s²)
t² = 3.70 s²
t = 1.92 seconds
Answer:
it c on edge
Explanation:
trust
Why are the alkali metals likely to react with group 17 elements?
Answer:
Because alkali metals are so reactive, they are found in nature only in combination with other elements. They often combine with group 17 elements, which are very “eager” to gain an electron.
Explanation:
hope this helps you if it does please mark brainliest
We can only tell the earth is rotating almost 960 miles an hour if we
a
look at other people around us as a reference point.
b
look at mountains far away from us as a reference point.
c
use a reference that is not on the earth, like the sun or stars.
Answer:
C
It is C i have to type this because i need 20 characters.
A rock is held steady over a cliff and dropped. 1 seconds later, another rock is thrown straight down at a speed of 11.3 m/s, and hits the first rock. How far have the rocks dropped before they collide? How long is the first rock in the air before it gets hit by the second rock?
What is the displacement of the rocks when they collide? __________ (Hint: be careful of sign -- the rocks drop.)
The first rock is in the air for __________ before it is hit.
Answer:
4.27s
Explanation:
If "t" represents the time traveled from the time rock 2 is dropped until the collision, then the time traveled for rock 1 = t + 1. And, since rock #1 is dropped making its initial velocity = 0, then:
The distance rock 1 travels is
x = (0)(t + 1) + 1/2(-9.8)(t + 1)2 = -4.9(t2 + 2t + 1) = -4.9t2 - 9.8t - 4.9
The distance rock 2 travels
x = -11.3t + 1/2(-9.8)t2 = -11.3t - 4.9t2
For the distances must be equal when the rocks collide:
-4.9t2 - 9.8t - 4.9 = -11.3t - 4.9t2
-9.8t - 4.9 = -11.3t
-4.9 = -1.5t
t = 3.267 s
Now, the distance they traveled can be found by plugging the 3.267 s back into either equation:
x = -11.3(3.267) - 4.9(3.267)2 = -89.2 m or 89.2 m below where they began
The time the first rock was in the air is t + 1 = 3.267 + 1 = 4.267 s = 4.27 s
Let
First rocks time be x
Second rocks time be x+1
initial velocity=u=11.3m/s
Distance of both rocks be s1 and s2
[tex]\\ \sf\longmapsto s=ut+\dfrac{1}{2}at^2[/tex]
Now
[tex]\\ \sf\longmapsto s1=11.3x+5x^2[/tex]
[tex]\\ \sf\longmapsto s2=11.3(x+1)+5(x+1)^2[/tex]
As both collide then
[tex]\\ \sf\longmapsto s1=s2[/tex]
[tex]\\ \sf\longmapsto 11.3x+5x^2=11.3x+11.3+5(x+1)^2[/tex]
[tex]\\ \sf\longmapsto 5x^2=11.3+5x^2+10x+1[/tex]
[tex]\\ \sf\longmapsto 10x+12.3=0[/tex]
[tex]\\ \sf\longmapsto x=1.23s[/tex]
Displacement
[tex]\\ \sf\longmapsto 11.3(1.23)=13.8m[/tex]
Done
PLEASE HELP ME RIGHT AWAY, ITS DUE NOW PLEASE HELP ME!!!!!!!
Answer:
B
Explanation:
0= no movement
Answer:
Explanation:A
Write the number below in scientific notation, 35,600 O A. 3.56 x 103 O B. 3.56 x 103 O C. 3.56 x 104 O D. 3.56 x 105
Ralph is mowing the back yard with a push mower downward with a force of 20.0 N at an
angle of 30.0° to the horizontal. What are the horizontal and vertical components of the force
exerted by Ralph?
Answer:
Horizontal component = (10N) · sin (20°) = 3.42... N (rounded)
Vertical component = (10N) · cos (20°) = 9.39... N (rounded)
Explanation:
Roadrunner speeds up from 2m/s to 10m/s in a distance of 10m. What is his acceleration?
d = v·t + (1/2)·a·t^2
a = 10m/s^2. t = 10s
v = 0m/s. Initial velocity
d = 0·10 + 10/2 · 10^2 = 0 +5·100
d = 500m
Three boxes are stacked on top of a cart. As the cart is moving, it comes to an abrupt stop. The boxes fall forward off of the cart. Explain why the boxes fell forward.
A racecar begins at rest and accelerates to 25 m/s at a rate of 6.25 m/s2. What distance does the racecar cover?
a.
2 m
b.
156 m
c.
4 m
d.
50 m
Answer:
d.
50 m
Explanation:
v² = u² + 2as
s = (v² - u²) / 2a
s =(25² - 0²) / (2(6.25))
s = 50 m
2. Express the following in SI units a) 0.009 cm? b) 25 km
Answer:
a).
S.I units of length is meters. So we've to change cm → m
[tex]{ \rm{1 \: cm \: \dashrightarrow \: 0.01 \: m}} \\ { \rm{0.009 \: cm \: \dashrightarrow \: (0.009 \times 0.01)}} \\ \\ = { \underline{ \rm{ \: \: 0.00009 \: m \: \: }}}[/tex]
b).
km → m
[tex]{ \rm{1 \: km \: \dashrightarrow \: 1000 \: m}} \\ { \rm{25 \: km \: \dashrightarrow \: (25 \times 1000)}} \\ \\ = { \underline{ \rm{ \: \: 25000 \: m \: \: }}}[/tex]