how is the flow of air important in designing the shape of a car?
Answer:
Explanation:
The more aerodynamic a vehicle is the less wind resistance there is meaning there is better gas mileage because it dont have to push so hard against wind and it also helps with the eye appeal
please help lol- brainlist to whomever- P.S---> Do it all please, and don't get any wrong. Then you get brainiist.
Glass: inorganic
Water: inorganic
Sugar: organic
Salt: depends what type of salt it is but most likely inorganic
Olive Oil: organic
4. Someone took the last cookie in the cookie jar last night. The LAST
person to leave this scene is the culprit. Who was it? (see below)
O
A. The cook with the motor cycle
B. The maid with the car
O
C. The handyman with the bike
D. The nephew and the dog
What’s the answer
Answer:
I think B is the answer
Explanation:
I think this cause a maid always cleans the house and might be awake at night
Why does no one actually help on here?
Answer: i dontt know everyone is annoying
Explanation:
7. Explain what happens to the volume of a sphere when the radius is tripled?
ANYONE PLS ASAPPPPPPP
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the concept of surface areas and Volumes.
When the radius is 'r', we get as,
V = 4/3*(π)(r^3)
when the radius is tripled that is '3r' , we get as,
V' = 4/3 (π)(3r)^3
V' = 27*(4/3(π)(r^3))
V' = 27 V
hence the new volume, when radius is tripled, is 27 times greater than the old sphere.
The vertical columns on the periodic table of elements are called groups.
A True
B. False
Answer:
True
Explanation:
The gravitational force between two objects will be greatest in which of the following situations?
Both objects have small masses are close together.
One object has a large mass, and the objects are close together.
Both objects have large masses and are close together.
Both object have large masses, and they are far apart.
Answer:
One object has a large mass, and the objects are close together.
PLEASE HELPPP! :))))
Answer:
Jupiter Neptune moon Uranus
Explanation:
if the volume of a fixed mass of hydrogen in a container is 30cm³ at a pressure of 50mmHg find the volume of the gas if the pressure is 60mmHg at constant pressure
25
Explanation:
P1V1=P2V2 hence 50×30=60v
V=1500÷60
V=25
Displacement is used to measure
A.
weight
B.
mass
C.
distance
D.
volume
Answer:
D. Volume
Hope this helped <3
7. A wave was generated by Oscillation and paused at two different times.
Describe differences and similarities in the characteristics of the wave at different times
Answer:
Differences
The position of the particles in the wave are at different positions at the different times The velocity of each particle will posses different magnitudes and directionacceleration of particles will be different as wellsimilarities
wave length and wave speed will remain the same
Explanation:
A wave generated by Oscillation and paused at two different times will maintain certain characteristics at all times while some characteristics will differ along the wave as it it paused
The differences in the characteristics of the wave at different time ( i.e. at paused and unpaused times )
The position of the particles in the wave are at different positions at the different times The velocity of each particle will posses different magnitudes and directionacceleration of particles will be different as wellsimilarities :
wave length and wave speed will remain the same
Which force can either repel or attract objects?
O A. Gravitational
O B. Weak nuclear
C. Strong nuclear
D. Electromagnetic
Answer:
D. electromagnetic forces
Explanation:
Research shows that continents move at an average rate of 2.3 cm per
year. Which two theories could be supported by this evidence?
Raisin theory
Expanding Earth theory
Contracting Earth theory
Theory of continental drift
SUBMIT
theory of continetal drift sumbit
Is it possible to get more work out of a machine then you put in yes or no?
Answer:
i think its possible yes
Explanation:
what is the microcoulomb if the coulomb is 1,00
Answer:
Coulomb = 100
Micro coulomb = 100 × 10^-6 = 10^-4 coulomb
A 0.547 kg pizza is thrown straight up in the air. At a height of 2.30 m above the surface of the earth it has a speed of 5.00 m/s. Calculate the total mechanical energy of the pizza crust.
Answer:
The total mechanical energy of the pizza crust is 19.2 J.
Explanation:
Mechanical energy is that which a body or a system obtains as a result of the speed of its movement or its specific position, and which is capable of producing mechanical work. Then:
Potential energy + kinetic energy = total mechanical energy
Kinetic energy is a form of energy. It is defined as the energy associated with bodies that are in motion and this energy depends on the mass and speed of the body.
Kinetic energy is defined as the amount of work necessary to accelerate a body of a certain mass and in a position of rest, until it reaches a certain speed.
Kinetic energy is represented by the following formula:
Ec = ½ *m*v²
Where Ec is kinetic energy, which is measured in Joules (J), m is mass measured in kilograms (kg), and v is velocity measured in meters over seconds (m / s).
In this case:
m=0.547 kgv= 5 m/sReplacing:
Ec = ½ *0.547 kg*(5 m/s)²
and solving you get:
Ec= 6.8375 J
On the other hand, potential energy is the energy that measures the ability of a system to perform work based on its position. In other words, this is the energy that a body has at a certain height above the ground.
Gravitational potential energy is the energy associated with the gravitational force. This will depend on the relative height of an object to some reference point, the mass, and the force of gravity. Then for an object with mass m, at height h, the expression applied to the gravitational energy of the object is:
Ep = m*g*h
Where Ep is the potential energy in joules (J), m is the mass in kilograms (kg) is h the height in meters (m) and g is the acceleration of fall in m / s² (approximately 9.81 m/s²)
In this case:
m= 0.547 kgg= 9.81 m/s²h= 2.30 mReplacing
Ep= 0.547 kg *9.81 m/s²* 2.30 m
and solving you get:
Ep= 12.342 J
So:
Total mechanical energy= 12.342 J + 6.8375 J
Total mechanical energy= 19.1795 J≅ 19.2 J
The total mechanical energy of the pizza crust is 19.2 J.
Can you help me please?
Answer:
a/ oscillating charges
Complete the following sentence.
The Richter scale is used to compare the
_____ of earthquakes.
Answer:
magnitude
Explanation:
The Richter scale compares the magnitude or energy of earthquakes
1. An ideal gas changes from a state defined by pressure P1 and volume V, to a state defined by pressure P2 and volume V2. Which set of properties is
independent of the path between the two states?
A work performed by or on the gas
B change in internal energy of the gas
C heat transfered to or from the gas
D work and heat transfer involving the gas
The Earth orbits the Sun because of the competing forces of _________________ and _______________________.
how does Lightning occur
Consider a projectile. Which of the following describes y-motion? Check all that apply.
1. The y motion is a vertical motion.
2. The y motion is a horizontal motion
3. A projectile covers different distances per second in the direction.
4. A projectile covers equal distance per second in this direction
Answer:
1. True - gravity affects the y motion
2. False - x-coordinates affect the horizontal motion
3. y because gravity affects motion in the y-direction
4. x generally no external forces act in the x direction and hence no acceleration in the x direction
The diagrams below show a man swinging a golf club.
The kinetic energy of the golf club at point Y is more than the potential energy of the club at point X. Which of the following statements best explains why this fact does not violate the law of conservation of energy?
Energy is added by the man to the golf club from point X to point Y
Gravity is constant from point X to point Y
Air resistance is greater at point than at point X
Acceleration due to gravity is greater at point than at point X
Answer: Energy is added, by the man, to the golf club from point X to point Y.
Explanation: i think :)
A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later. If the speed of sound is 340 m/s, how high is the cliff?
Answer:
h = 493 m
Explanation:
Given that,
A rock is dropped from a sea cliff, and the sound of it striking the ocean is heard 2.9 s later.
The total distance covered by the rock is 2d. We know that,
Speed = distance/time
[tex]v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{340\times 2.9}{2}\\\\d=493\ m[/tex]
So, the height of the cliff is equal to 493 m.
A car driver spends 3 h driving at an average speed of 80 km/h, stops for 30min to have some rest, and then drives at an average speed of 90 km/h for 2 hours. Calculate the average speed during the whole journey.
Answer:
76.36km
Explanation:
Average speed=Total distance covered ÷ Total
time taken
Distance=Time * speed
3*80=240km
2*90=180km
Total distance covered =240+180=420km
Total time taken=3+1/2 an hour+2=5 1/2 hours
Average speed =420km ÷5 1/2 hours
=76.36km/h
The expansion of a liquid is _____ than a solid
A. less
B. greater
Answer:
B.Greater
Explanation:
Smack that thanks button pleasee.
Help quick please thank u
Answer:
I. 56
II. c is the speed of light in vacuum.
III. 385.180×10¯²⁷ Kg.
Explanation:
I. Determination of the value of p.
²³⁸₉₂U + ¹₀n —> ¹³⁹ₚBa + ⁹⁷₃₆Kr + 3 ¹₀n
92 + 0 = p + 36 + 3(0)
92 = p + 36
Collect like terms
92 – 36 = p
56 = p
Therefore, the value of p is 56
II. Determination of the meaning of c
ΔE = Δmc²
In the Einstein's equation above,
E => is the energy
m => is the mass
c => is the speed of light in vacuum.
III. Determination of the total mass of the element formed after the reaction.
From the reaction above, the elements formed after the reaction are:
Barium–139 and Krypton–97. Thus, we can obtain the total mass of the elements formed as follow:
Mass of Ba–139 = 232.560×10¯²⁷ Kg
Mass of Kr–97 = 152.620×10¯²⁷ Kg
Total mass =?
Total mass = mass of Ba–139 + mass of Kr–97
Total mass = 232.560×10¯²⁷ + 152.620×10¯²⁷
Total mass = 385.180×10¯²⁷ Kg
What is the output voltage?
Answer:
120 volts
Explanation:
The output voltage is the voltage released by a device, such as a voltage regulator or a generator. Voltage regulators maintain constant voltage levels. A conductor carries the output voltage to various destinations, such as homes and businesses.
HELP PLEASE (ramadan mubarak)
Redox reactions include which types of reactions?
A.
Acid-base, decomposition, double-replacement, synthesis
B.
Double-replacement, combustion, synthesis, decomposition
C.
Single-replacement, synthesis, decomposition, combustion
D.
Single-replacement, double-replacement, acid-base, synthesis
Answer:
C
Explanation:
five main types of redox reactions: combination, decomposition, displacement, combustion, and disproportion.
synthesis is kinda the same as combination
Which of the following is a learned behavior of a cat
A. Meowing
B. Drinking water
C. Purring when happy
D. Using a litter box