Answers
Related Questions
Calculate the Velocity.
What is the average velocity of a car that moved 60km in 3 hours?
O A: 10 km/h
B: 20 km/h
C: 30 km/h
D: 60 km/h
Answers
The car's average speed is 20 km/hr.
There's not enough information given to calculate its velocity.
Which describes an object in projectile motion?
A. Gravity acts to push the object sideways.
B. The object moves in a straight path.
C. The forward velocity of the object is 0 m/s.
D. The object’s inertia carries it forward.
Answers
An ice skater weighs 500 [N]. He is coasting to the right at a constant velocity of 2 [m/s]. Assume
the ice is frictionless.
What is the net force on the skater?
Answers
Answer:
The net force on the skater is zero. ([tex]F_{net} = 0\,N[/tex])
Explanation:
According to Newton's First Law, an object is at equilibrium when either it is at rest or moves at constant velocity, which means a net force of zero. Based on the given statement, there are no external forces acting on skate and, therefore, the net force on the skater is zero. ([tex]F_{net} = 0\,N[/tex])
why is epidermis important for plants
Answers
Answer:
Epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.
hope this helps
???whats the answers??
Answers
The answers is 30 miles per hour, the driver is speeding the car up, section-H, 12 minutes, section-D, and 65 miles per hour.
Two curves on a highway have the same radii. However, one is unbanked and the other is banked at an angle θ. A car can safely travel along the unbanked curve at a maximum speed v0 under conditions when the coefficient of static friction between the tires and the road is 0.563. The banked curve is frictionless, and the car can negotiate it at the same speed v0. Find the angle θ of the banked curve.
Answers
Answer:
θ = 29.38°
Explanation:
The centripetal force is given by the formula;
F_c = F_n(sin θ) = mv²/r
Now, the vertical component of the normal force is; F_n(cos θ)
Now, this vertical component is also expressed as; F_n(cos θ) = mg
Thus, the slope is;
F_n(sin θ)/F_n(cos θ) = (mv²/r)/mg
tan θ = v²/rg
v² = rg(tan θ)
The initial speed will be gotten from the relation;
(v_o)² = μ_s(gr)
Plugging rg(tan θ) for (v_o)², we have;
μ_s(gr) = rg(tan θ)
rg will cancel out to give;
μ_s = (tan θ)
Thus, θ = tan^(-1) μ_s
μ_s is coefficient of static friction given as 0.563
θ = tan^(-1) 0.563
θ = 29.38°
A toyota prius can go from 0 m/s to 30 m/s in 15 s. What is its acceleration? Select one: O 15 m/s2 O 2 m/s2 450 m/s2 30 m/s2
Answers
Answer:
I think it is 2m/s2
Explanation:
Have a great day:)
stored energy and the energy of positions are ________________ energy
Answers
Answer:
Gravitational Energy
If an object has two forces acting on it, how can the net force equal 0?
Answers
Answer:
Check explanation.
Explanation:
Net force is essentially the sum of the forces enacting upon an object. One example of net force is gravity and normal force. It is commonly accepted that every object has a force acting upon it, even if it is stationary. To give an example, the weight of an object has a force upon the earth but the earth pushes back, essentially meaning that the object will not sink.
Which statement accurately describes the motion of the objects in the ticker tape above?
Both objects are speeding up at a constant rate.
One object speeds up before it slows to a stop.
Both objects speed up before stopping.
One object speeds up at a constant rate until it stops.
Answers
Answer:
B
Explanation:
One object speeds up before it slows to a stop.
When reading this type of graph, we know that when the points are far apart, then the object is definitely moving quickly. Also again, we know that when the points are besides each other, then we say that the object is moving slow. When the distance that is between the points are changed, the velocity of the object subsequently changes too, and therefore, we say that the object is accelerated. When there are lots of points in one location, we will see that the object is not moving.
This then translates into that
The object(s) at the top begins to slow, eventually, it increases in its speed, going forward, it slows down again, before it finally halts. The object at the bottom on the other hand, starts fast, before slowing down.
then:
"One object speeds up before it slows to a stop "
An object that has 0 acceleration will never be in motion
Answers
Answer:
False
Explanation:
A student lifts a school bag from the ground and puts it on his shoulders 1.5m above the ground. A force of 5N is acting on an object. Calculate the work done by him on the school bag.
Answers
Answer:
w = 7.5 [J]
Explanation:
We must remember the definition of mechanical work, which tells us that work is equal to the product of force by distance. This force must be applied in the direction of movement. So we have the following equation:
w = F*d
where:
w = work [J]
F = force [N]
d = distance [m]
Now replacing we have:
w = 5*1.5
w = 7.5 [J]
When a group has a question about their ohmmeter,
who is the best person to ask for help?
the student with the highest grades
a student whose lab group is finished
the instructor who is leading the lab
a student whose mom is an electrician
Answers
Answer:
c
Explanation:
Answer:
C
Explanation:
Why do mass numbers have a trailing decimal? use the following words describe for credit isotopes protons neutrons electrons in carbon 13
HELP ME
Answers
Answer:a number without a decimal are generally not significant. Isotopes are atoms of same element which have the same atomic number but different number of neutrons. Isotopes of elements are represented in the following way: In an atom, the number of protons is equal to its atomic number.. An atom of an element is neutral in nature so atom contains the same number of protons and electrons.
Explanation:
When a racer gets thrown out of a race they gets this?
Answers
Answer:
A black flag
Explanation:
Which is a trend for marriage and having children today as compared to past generations?
A.
More people are waiting to cohabitate until after marriage and not having children.
B.
More people are getting married overall and having children immediately.
C.
More people are waiting to get married and typically feel regret after having children.
D.
More people are marrying later and having children later in life.
Answers
Answer:
D
Explanation:
Answer:
itssss D
Explanation:
Which circuit is a series circuit
Answers
Answer:
The answer is A
Explanation:
Answer:
it is A)
Explanation:
it has multiple circuits.
An atom of an element has 8 protons and 9 neutrons in it's nucleus. What is the name of the element?
Answers
A racecar on a straight track, starting from rest*, steps on the
accelerates towards the finish line at 10.0 m/s^2. If the finish line is
500.0m away, how yong does it take the car to cross the finish line?"
A 5.08
B 10.05
C 20.05
D 50.0s
E 100.0
Answers
What is the measure of how much a material resists the formation of an electric field?
A. Permittivity
B. Dielectric
C. Capacitance
D. Resistance
Answers
Answer:
C. Capacitance
Explanation:
right on EDGE2021
What is the mass of 23 mL of a liquid that has a density of 1.5 g/mL?
Answers
Answer:
The answer is 34.5 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 23 mL
density = 1.5 g/mL
We have
mass = 23 × 1.5
We have the final answer as
34.5 gHope this helps you
Dolphins and Whales use .................. to find something to eat or find their family members even if it is dark or the water is not clear. *
Echolocation
sight
smell
Answers
Answer:
Echolocation
- sound waves are being used and once they hit an object they are bounced back (that's how an echo is created)
- it's useful since it can tell you where something is
Which of the following might be the material list for an experiment?
A data tables and graphs
B.meters, liters, and kilograms
C plastic containers, soil, water, thermometers, and plants
D temperature, light, and time
Answers
Answer:
C
Explanation:
One-fourth of adults in the United States are not active at all.
true
false
Answers
Answer:
true 28%
Explanation:
;"/:;,*"# /hcrvuvf
Answer:
True - - - probably more than one-fourth aren't to be honest
Explanation:
Which of the following is a diatomic molecule?
Cl2
NO
O3
NaCl
Answers
Answer:
Diatomic molecules are composed of only two atoms, of either the same or different chemical elements. Common diatomic molecules include hydrogen (H2), nitrogen (N2), oxygen (O2), and carbon monoxide (CO).
Explanation:
Hello I have the same question but I couldnt figure it out but i looked it up and this is what found it seemed to help me alot.
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer
C. 0 N
F=ma=0.5(0)=0 N
Answer:
c
Explanation:
hope it helps
How long will it take a person walking at 2.1 m/s to travel 13 m?
Answers
Answer:
I gonna give you the number so but you need to round 6.19047619048
Explanation:
This is a speed formula so you would use the formula speed=distance/timeYou need to rearrange it to time=distance/speedSo you need to divide 13m by 2.1 m/sOlivia and Caitlyn want to know whether the wind affects how far a football will travel. They have one student go outside to the football field when it is not windy and throw the football 30 times. They measure how far the ball goes using a meter stick. On a windy day, they have the same student go to the football field and throw the football 30 times. Again, they measure how far the ball goes using the same meter stick. What is the Independent Variable?
Answers
Answer:
presence or absence of wind
Explanation:
When establishing a relationship between two variables the effect one variable has on the other is studied. The variable that changes with respect to the other is the dependent variable while the other variable is called the independent variable.
Here the distance the football covers in the presence and absence of wind is studied. So, the presence or absence of wind is the independent variable.
How are the layers of the Earth similar and different from one another?
Answers
Answer:
the innermost layer of the earth
Explanation:
the earth has an outer core liquid and an inner core solid they are not chemically distinct from each other but they are chemically distinct from the mantle the core is mainly composed of nickel and iron
A baseball is thrown vertically downward from the top of a 155 m tower with an initial velocity of -25 m/s. How long will it take, until it reaches the ground?
Answers
Answer:
t = 2.55 s
Explanation:
Given that,
Height from which the baseball is thrown, h = 155 m
Initial velocity of the baseball, u = -25 m/s
We need to find the time taken by it to reach the ground. Let the time is t. Using equation of kinematics to find it as follows:
[tex]v=u+at\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{0-(-25)}{9.8}\\\\t=2.55\ s[/tex]
So, it will take 2.55 seconds to reach the ground.