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
weeeeeb [17]
3 years ago
9

A train travels from Albuquerque, New Mexico, to Mexico City in 4 hours with an average velocity of 80 km/h to the south. What i

s the train’s displacement?
Physics
2 answers:
Ivenika [448]3 years ago
6 0
The displacement of the train is equal to the velocity of the train multiplied by the time of travel. In this case,the average velocity is equal to 80 km/h and the time of travel is four hours. The answer is 80 km/h *4 h or equal to 320 km in total. Answer is 320 kilometers.
nikitadnepr [17]3 years ago
6 0

Answer: The displacement is the difference in position (between the final position and the initial), so train's displacement will be the initial position subtracted of the position when the train has traveled for 4 hours.

If we define the original position as 0, then the total displacement is, if the train has a velocity of 80km/h, then in 4 hours the train travels 80*4 km= 320 km to the south. Because the train travels in one direction and never turns, the total displacement is 320km

You might be interested in
Which statement accurately describes the motion of the object in the graph above over 10 seconds? Group of answer choices The ob
timurjin [86]

Answer:

Object appears to move forward at 1 cm/sec, then the velocity drops to zero for 3 sec and then moves forward at 2 cm/sec     (11 - 3) / (10 - 6) = 2 cm/sec

7 0
3 years ago
Predict what happens when glucose levels are high in the humms body
Goryan [66]

Glucose is blood sugar (hyperglycemia) comes from diabeties often, but can occur with other reasons, when glucose is to high someoenes sugar raises. Often this can lead to a diabetic coma, fatigue, vomiting, hospitalization, and even death if serious enough, from to high sugar. Many things can happen after this, and a lot are serious.

on the flip side (hypoglycemia) if sugar gets to low, confusion, fainting, vomiting, and nausea occur, as well as comas, and death if serious enought.

5 0
3 years ago
When thorium (90 protons) ejects a beta particle, the resulting nucleus has
Sav [38]

Answer:

none of the above

Explanation:

The actual answer is '91 protons'. In fact, the beta decay of the thorium-234 is the following:

{}_{90}Th \rightarrow {}_{-1}e+{}_{91}Pa

where inside the nucleus of Thorium (90 protons), a neutron turns into an electron (the beta particle) + a proton. Therefore, the resulting nucleus (which is Protoactinium) has a total of 90+1 = 91 protons.

So, the correct answer would be '91 protons'.

7 0
3 years ago
What is the momentum of an 18-kg object moving at 0.1 m/s ?
Anit [1.1K]

Answer:

1.8 m/s

Explanation:

here's the solution : -

momentum = mass × velocity

=》18 × 0.1

=》1.8 m/s

6 0
3 years ago
A 50-cm-long spring is suspended from the ceiling. A 230g mass is connected to the end and held at rest with the spring unstretc
alukav5142 [94]

Answer:

k = 25.07 N/m

Amplitude = 9 cm

f = 1.66 Hz

Explanation:

Given:

- The original length of the spring L_o = 50 cm

- The mass hanged m = 230 g

- The amount of stretch given 2x = 18 cm @lowest point.

Find:

a. What is the spring constant? (K=)

b. What is the amplitude of the oscillation?

c. What is the frequency of the oscillation?

Solution:

- Make a FBD of the hanging mass, There are two external forces acting on it that is the force of gravity due to its weight and the springs restoring force when its stretched to its lowest point. After hanging the mass on the spring a new equilibrium position is achieved which also causes the spring to stretch. We can apply the Equilibrium conditions at this point in vertical direction as:

                                      k*x - m*g = 0

                                      k = m*g / x

Where, x is the extension of the spring or mean stretch. which 0.5*amplitude (Lowest point). x = 9 cm

                                      k = 0.23*9.81 / 0.09

                                      k = 25.07 N/m

Answer: For part a we have the stiffness of the spring k = 25.07 N/m

- The amplitude of the oscillating motion is the half the amount of total stretch or the amount the spring extends above or below the mean position.

                                       Amplitude = x = 9 cm

- The frequency of any oscillatory motion which can be modeled by SHM can be expressed as:

                                       f = 1 / 2*p*  sqrt ( k / m )

- Plug the values in:                                        

                                       f = 1 / 2*pi* sqrt (25.07 / 0.23 )

                                       f = 1.66 Hz

Answer: For part c the frequency of oscillation is f = 1.66 Hz

           

8 0
3 years ago
Other questions:
  • The owner of a van installs a rear-window lens that has a focal length of -0.340 m. When the owner looks out through the lens at
    11·1 answer
  • 10 PTS. If an electromagnetic wave has a frequency of 8 ⋅ 10^14 H z , what is its wavelength? Use λ=V/F. The speed of light is 3
    10·1 answer
  • you walk from the park to your friend's house, then back to your house. (a) What is the distance traveled? (b) What is your disp
    11·1 answer
  • A car moved 60 km East and 90 km West. What is the displacement?
    12·1 answer
  • 7) A6 kg ball is thrown at 12 m/s. What is the momentum of the ball before it strikes a pin?
    15·1 answer
  • Dierdre drew a diagram to compare the three types of mirrors.
    7·1 answer
  • 6. Directions: Drag each item to the correct location on the diagram. Many of the astronomical events that can be witnessed from
    13·2 answers
  • The potential energy of a pair of hydrogen atoms separated by a large distance x is given by U(x)=−C6/x6, where C6 is a positive
    13·1 answer
  • A particle travels in a circle of radius 76 cm and completes one revolution in 4.5 s. What is the centripetal acceleration of th
    12·2 answers
  • The pond is 13m deep calculate the pressure at the bottom of the pond due to water take density of water as 1000Kg/m3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!