45 rpm is greater/faster. Convert both measurements to the same unit rate:
45 rpm = (45 rev) / (1 min) = (45 rev) / (60 s) = 0.75 rps
4.71 rad/s = (4.71 rad) / (1 s) • (1 rev) / (2π rad) = (4.71 rev) / (2π s) ≈ 0.74962 rps
The Escape speed at the surface of a certain planet is twice that of the earth. what is its mass in unit of earth's mass?
Plzz help
Answer:
22Km/sec
Explanation:
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A
Question 1
Which of the following is the most accurate description of the relationship between velocity and acceleration?
Velocity and acceleration are the same thing.
O
Velocity is a type of acceleration.
Acceleration is a change in velocity.
Acceleration is positive and velocity is negative.
Question 2
An object that is undergoing a change in velocity is said to be-
Answer:
response
Explanation:
Acceleration is your changing Velocity. An object that is ACCELERATING is experiencing a change in velocity. usually positive. if an object such as a car reduces velocity, it is called deceleration
A piece of wire length 30cm and cross sectional area of 0.5mm^2 has a resistance of 5ohms at 20°c. It is then heated to a temperature of 150°c. Calculate it's resistivity at 20°c
Answer:
8.333*10^-6 ohms
Explanation:
Resistivity of a material is expressed as;
p = RA/l
R is the resistance of the material
A is the cross sectional area
l is the length of the material
Given
R = 5 ohms
A = 0.5mm^2
A = 5 * 10^-7m^2
l = 30cm = 0.3m
Substitute into the formula;
p = (5 * 5 * 10^-7m^2)/0.3
p = 25 * 10^-7/0.3
p = 0.0000025/0.3
p = 8.333*10^-6
Hence its resistivity at 20 degrees Celsius is 8.333*10^-6 ohms
2. The weights of four objects with different masses have been calculated to show how much each object would weigh on four different planets.Based on the table, which object would have the largest mass and greatest weight on Earth?
Weights of Four Objects on Four Planets
Planet 1
B 10 N
C 1 N
D 20 N
Planet 2
A 10N
C 0.2 N
D 4 N
Planet 3
A 100 N
B 20 N
D 40 N
Planet 4
A 5 N
B 1N
C 0.1 N
Answer:
d
Explanation:
What happend to the space pod in missing seconds?
Answer:
From our investigation of what forces are like in a collision, we learned that when two
objects collide, a force is exerted on each object. The two forces are in opposite
directions but the same strength. This allowed us to infer that an equal strength force
was exerted on the space station and the pod, but in opposite directions.
As a result, the space station and the pod are moving in opposite directions. We need to
learn more about the effects of collisions on each object’s motion so we can report back
to Dr. Gonzales at the space agency.
You will use physical materials to gather data about
forces in a collision. You will also notice how objects
are affected by collisions. Students will use their
data to infer the force direction for objects in a
collision.
Based on the velocity change of each object,
what did you infer about the direction of forces
during a collision?
• We observed that the velocity of each object changed during a collision, so we can infer
that a force had to be exerted on each object. However, the motion of the objects
changed in different ways.
• The object that was moving forward slowed down, so I can infer that the force must have
pushed backward on this object.
• The other object started moving forward, so the force must have pushed forward on that
object. If one force was backward and one force was forward, then the forces pushed
the objects in opposite directions.
Explanation:
Good Luck!
I will make brainliest! PLS HELPPP!!
Answer these questions:
1. How is a mixture different from a compound?
2. How are the atoms in a compound held together?
Classify the following as mixtures, elements, or compounds:
3. H20
4. H4
5. Fe + S
Answer:
1.A compound is when two substances are put together and there is a reaction creating a new substance Ex. H20. A mixture is when two substances are put together, there is no reaction and they can be separated easier than compounds. Ex. salad dressing.
2.Atomic bonds
3.Compound
4.Element
5.Mixture
Explanation:
why a small car can stop easier than an 18 wheeler while traveling at 70 mph down the interstate?
A t-shirt cannon is fired into a crowd at a baseball game. The t-shirt with mass 0.17kg is fired, and the launcher (2.7kg) recoils at 1.7 m/s. Calculate the launch velocity of the t-shirt. Answer to 2 decimals
Answer:
Exactly 27 m/s
Explanation:
P=mv
P(cannon)=2.7*1.7
P(cannon)=4.59 kg*m/s
P(cannon)=P(tshirt)
4.59=0.17*v
v=27 m/s
What kind of surface causes regular reflection? Expalin.
Explanation The regular reflection takes place when the light rays are incident on a polished smooth surface like a plane mirror, a stainless steel sheet and a thin sheet of aluminum, so, the reflected rays of light move only in a fixed direction.
Felix has a bucket of golf balls. The table shows the number of golf balls of each color in the
bucket.
Golf Balls in a Bucket
Number
Color
Pink
White
Orange
Green
4
11
8
18
Felix selects a golf ball at random. Based on the information in the table, which statement is
true?
A The golf ball is more likely to be green than all other colors combined.
B The golf ball is equally likely to be pink, white, orange, or green.
C The golf ball is 2 times as likely to be orange as it is to be pink.
D The golf ball is 7 times as likely to be green as it is to be white.
The golf ball is two times as likely to be orange as it is to be pink. Therefore, option C is correct.
What is probability?Probability can be described as the branch of mathematics of numerical descriptions of how likely an event is to take place. The probability of an event can be a number between 0 and 1, where 0 indicates the impossibility of the event and 1 shows certainty.
Given, the number of pink balls = 4
The number of white balls = 11
The number of orange balls = 8
The number of green balls = 18
The total number of balls = 4 + 11 + 8 + 18 = 41
When Felix picks a golf ball at random. The golf ball is more likely to be pink = 4/41
The probability golf ball is more likely to be white = 11/41
The probability golf ball is more likely to be orange = 8/41
The probability golf ball is more likely to be green = 18/41
Therefore, the golf ball is two times as likely to be orange as it is to be pink.
Learn more about probability, here:
https://brainly.com/question/11234923
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West
East
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디
50 Newtons
40 Newtons
What is the net force on the box?
А
10 Newtons West
B
10 Newtons East
с
90 Newtons West
D
90 Newtons East
A . 10 Newton West
that's my Answer
Read the description of the centrioles. What is their function?
Answer:
Typically found in eukaryotic cells, centrioles are cylindrical (tube-like) structures/organelles composed of microtubules. In the cell, centrioles aid in cell division by facilitating the separation of chromosomes. For this reason, they are located near the nucleus.
Answer:
sorry im just gettig points but the actaul anserw is on top of this oneExplanation:
Bye
Jacob is building a soapbox derby car. He hopes to win an upcoming downhill race in his neighborhood.
Which of the following should he take into consideration if his only concern is winning the race?
A. the color of the goggles that he wears
B. the shape of the car he makes
C. the mass of the materials he uses
D. the strength of the materials he uses
HELP ME PLEASE!!!THIS IS SCIENCE!!
What are the units we measure length or distance in?
I have to type more to ask but I would greatly appreciate it if you guys could answer my question thank you very much
Answer:
U could measure it in area and in operations.
Answer:
meters, millimeters, kilometers, centimeters, inches, feet, yards, miles
Why isn't all fresh water usable?
Answer:
2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost
if the period of the wave is 0.34 seconds what would be the frequency of the wave
Answer:
3 every second
Explanation:
1) A pendulum is configured to have a period of 2 seconds.
What is the length of the pendulum? (Use 10 m/s^2 for g)
If you doubled the length of the pendulum, what would its New Period be?
2) In a car collision, a car experiences a force for 1 seconds. The car’s mass is 700 kg and it was moving at 20 m/s before the collision and slowed down to 8 m/s.
What is the force on the car during the collision?
If the collision was with a 650 kg car that was at rest, what was the speed of the 650 kg car after the collision?
"The" (and any subsequent words) was ignored because we limit queries to 32 words.
A billiard ball rolls from rest down a smooth ramp that is 8.0 m long. the acceleration of the ball is constant at 2.0?
Which statement correctly defines power
Answer:
The ability to do something or act in a particular way, especially as a faculty or quality.
"The power of speech"
When parallel parking, you should select a space that is __________ as long as your car.
A: exactly
B: one and a half times
C: two times
Answer:
1 1/2 times the length of the car.
Explanation:
The way I parallel park, I'd want 3 or more lengths to get in, but I imagine that the answer is B and that is correct when you look it up.
Which of the following terms are needed to completely describe speed?
Check all that apply.
A. Direction
B. Units
C. Mass
D. Number
Answer: c. and a
Explanation:
While frying French fries, Wanda burned her hand. Burns are examples of a:
a. skin abnormality.
b. homeostatic balance.
c. skin infection.
d. homeostatic imbalance.
Answer:
d. homeostatic imbalance
Explanation:
Answer:
It's D
Explanation:
I'm pretty sure but if im wrong I'll give you the points back <3
Why does the plane, tied on a string onto the ceiling, move in a horizontal circle, and why doesn’t the plane move up and down?
Answer:
There’s a tangential velocity and centripetal force. The object moves in a circle because it’s falling towards the center of the circle (point directly under string) but the velocity is such that the object never gets closer to the center
Explanation:
A comparison within a text can be used by the author to relate things that are
Answer:
Putting together characters, situations, or ideas to show common or differing features in literary selections. Problem/Solution: An organizational structure in nonfiction texts, where the author typically presents a problem and possible solutions to it.
which material would you select to replace broken handle of electric kettle
please will mark as brainlist
Answer:
hot glue
Explanation:
-insert the hot melt cylinder into the gun and wait until it heats up;
-gently apply a layer of substance to the crack;
-spread the hot glue in a thin layer over the surface;
-wait until it freezes.
An object is moving to the right at a constant velocity. What will happen if a
force of 20 N starts acting on it in the opposite direction?
А The object's velocity will increase.
B
The object's velocity will decrease.
с
The object will come to a stop.
D
The object will move at the same velocity.
The moon revolves around Earth. The moon travels at a speed of about 1 km/s. What keeps the moon in orbit around Earth?
A.Nuclear Fusion
B.Gravity
C.Magnetism
D.Ocean Tides
Answer:
I know its not A or D so its B or C and the more logical answer would be B. gravity
Explanation:
A liquid has a specific heat of 9 J/g • °C and a solid has a specific heat of 3 J/g • °C. Which
substance, the solid or liquid will heat up faster? Which will cool down faster?
Explanation:
substances have been in direct sunlight for up to 60 minutes. ... cool the fastest? ... 0.60 J/g °C. Match & then label each substance with its specific heat capacity ...
What is the acceleration of the object from 2s to 14s