1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Stolb23 [73]
3 years ago
7

In the Rolling Plains ecoregion of Texas, some parts of rivers are in deep canyons and others have bottoms that are close to the

level of the surrounding land. What conditions are most likely to be found in a place where a canyon has formed?
A. fast-moving water and rock that is easily eroded
B. slow-moving water and rock that is highly resistant to erosion
C. slow-moving water and rock that is easily eroded
D. fast-moving water and rock that is highly resistant to erosion
Physics
2 answers:
Serga [27]3 years ago
4 0

Answer:

most likely C

Explanation:

Nostrana [21]3 years ago
4 0
The answer is C, slow moving water and rock that is easily eroded.
You might be interested in
Define 1 kg of mass as international standard​
Ann [662]
The kilogram is the Standard International System of Units unit of mass. It is defined as the mass of a particular international prototype made of platinum-iridium and kept at the International Bureau of Weights and Measures.
8 0
3 years ago
Read 2 more answers
Which data set has the largest range? A. 55, 57, 59, 60, 61, 49, 48 B. 21, 25, 14, 16, 29, 22, 20 C. 12, 15, 16, 19, 18, 15, 27
Simora [160]
Data D has the largest range.

Data A: 61-48=13
Data B: 29-14=15
Data C:27-12=15
Data D:54-31=23

Therefore, Data D has the largest range.
3 0
3 years ago
Which is true about the way air flows
JulsSmile [24]

Answer:

A High-to-Low

Explanation:

its like water running down a hill.

4 0
3 years ago
Pre-Algebra and Physical Science
PolarNik [594]

Answer:

Hey pal what is the question

4 0
2 years ago
Read 2 more answers
A 1500 kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2500 kg SUV traveling from ea
kolezko [41]

Answer:

v = 19.33 m / s   South

Explanation:

To solve this exercise we must use the conservation of momentum, for which we must define a system formed by the two cars, therefore the forces during the collision are internal and therefore the moment is conserved.

Since it is a vector quantity, we are going to work on each axis, the x axis is in the East-West direction

initial instant. Before the crash

        p₀ = m 0 + M v₂ₓ

final instant. Right after the crash

        p_f = (m + M) vₓ

        p₀ = 0_pf

        M v₂ₓ = (m + M) vₓ

In this case m is the mass of the car and M the mass of the SUV

        vₓ = \frac{M}{m+My}  v₂ₓ            (1)

in the Y axis (North - South direction)

initial instant

       p₀ = m v_{1y} + M 0

final moment

       p_f = (m + M) v_y

       p₀ = p_f

       m v_{1y} + M 0 = (m + M) v_y

       v_y = \frac{m}{m+M}  \  v_{1y}       (2)

With these speeds we can use the relationship between work and the variation of kinetic energy, in this part the two cars are already united.

         W = ΔK

friction force work is

         W = - fr d

the friction force is described by the equation

         fr = μ N

Newton's second law

         N-W = 0

         N = W

         

we substitute

         W = - μ (m + M) g d

as the car stops the final kinetic energy is zero and

the initial kinetic energy is

         K₀ = ½ (m + M) v²

we substitute

         - μ (m + M) g d = 0 - ½ (m + M) v²

            μ g d = ½ v²

            v² = 2 μ g d

the distance traveled can be found with the Pythagorean theorem

        d = \sqrt{x^2+y^2}

        d = \sqrt{5.48^2 + 6.37^2}

        d = 8.40 m

let's calculate the speed

         v² = 2 0.75 9.8 8.40

         v = √123.48

         v = 11.11 m / s

this velocity is in the direction of motion so we can use trigonometry to find the angles

          tan θ = y / x

          θ = tan⁻¹ y / x

          θ = tan⁻¹ (-5.48 / -6.37)

          θ = 40.7º

Since the two magnitudes are negative, this angle is in the third quadrant, measured from the positive side of the x-axis in a counterclockwise direction.

          θ'= 180 + 40.7

          θ’= 220.7º

In the exercise they indicate the the sedan moves in the y-axis, therefore

          sin θ'= v_y / v

          v_y = v sin 220.7

          v_y = 11.11 sin 220.7

          v_y = -7.25 m / s

the negative sign indicates that it is moving south

To find the speed we substitute in equation 2

          v_y = \frac{m}{m+M}  \ v_{1y}

          v_{1y} = v_ y   \frac{m+M}{m}

           

let's calculate

         v_{1y} = -7.25    \frac{1500+2500}{1500}

         v_{1y} = - 19.33 m/s

therefore the speed of the sedan is v = 19.33 m / s with a direction towards the South

4 0
3 years ago
Other questions:
  • Two ice skaters hold hands and rotate, making one revolution in 2.87 s. Their masses are 59.0 kg and 73.0 kg, and they are separ
    11·1 answer
  • Where do people get their energy to turn a wheel??
    14·1 answer
  • When you are ice skating, to get started, you push your skate backwards on the ice and, as a result, begin to move forward. Whic
    7·2 answers
  • You attach a 1.90 kg mass to a horizontal spring that is fixed at one end. You pull the mass until the spring is stretched by 0.
    15·1 answer
  • A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 14.0 N.
    5·1 answer
  • What is the best way to describe the rate of motion of an object that changes speed several times over a period of time is to ca
    7·1 answer
  • a) If a proton moved from a location with a 5.0 V potential to a location with 7.5 V potential, would its potential energy incre
    13·1 answer
  • The instrument which is commonly used to measure the intensity of radioactivity is called a
    9·2 answers
  • In acceleration time graph curve upward shows _______ acceleration
    9·2 answers
  • The water-balloon weighs 4.9 N. gravitational field strength = 9.8 N/kg Calculate the mass of the water-balloon
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!