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
Sindrei [870]
3 years ago
14

Emily takes a trip, driving with a constant velocity of 85.5 km/h to the north except for a 22 min rest stop. If Emily's average

velocity is 68.8 km/h to the north, how long does the trip take? Show your work
Physics
1 answer:
juin [17]3 years ago
5 0

Answer:

1½ hours

Explanation:

Let the amount of time she drove at 85.5 km/hr be t, then

The distance that she rode would be 85.5 * t

This is means Emily has traveled the same distance at 68.8 km/hr without any stoppage whatsoever. Thus, we can create an equation as such

85.5 * t = 68.8 (t + 22/60), the 22/60 being, converting 22 minutes into hours. We proceed further as

85.5t = 68.8t + 1513.6/60, multiplying all sides by 60, we have

5130t = 4128t + 1513.6, now we collect like terms

5130t - 4128t = 1513.6

1002t = 1513.6

t = 1513.6/1002

t = 1.51 hrs, or in minutes, 1.51 * 60

t = 90.63 minutes. 1 hour and 36 minutes

So the total time the trip took, 22 minutes in addition, or say, 1 hour 58 minutes.

You might be interested in
A force of 19 newtons is applied on a cart of 2 kilograms, and it experiences a frictional force of 1.7 newtons. What is the acc
amid [387]
A= f/m

a= 19/2

a= 9.5m/s^2
8 0
3 years ago
If the moon disapared what affect would this have on earths tides
Free_Kalibri [48]
If the moon disapared what affect would this have on earths tides:
There would no longer be any tides.
The moon is what causes the push and the pull of waves.        
6 0
3 years ago
Mercury is the 80th position in the periodic table how many protons does it have
snow_lady [41]
Errrrr, it has 80.




80 is the correct answer
4 0
4 years ago
Read 2 more answers
Which of The following is the best example of water changing from a liquid to gas
expeople1 [14]

Answer:

There are no examples but this should be evaporation

Explanation:

4 0
3 years ago
Can anyone help me with these questions? TIA!<br> (Don’t actually answer please! :) )
nataly862011 [7]
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Question 7: </h2>

 \huge\text{Graphs:}

The graph of  

• The I-V for Ohmic Metal wire conductor at constant temperature  always shows a straight line between the Current(I) plotted at Y axis and Voltage(V) plotted at X axis. Picture 1

• The I-V graph for Diode shows that first the current is zero but as we increase the potential difference(voltage), it results in the increase in the current. Picture 2

<h2>_____________________________________ </h2><h2>Question 8: </h2>

\Large\textbf{Diode:}  

A diode is a device that allows current to flow in only one direction.

\Large\textbf{Forward and Reverse Biasing:}  

Forward Bias, When a diode is forward bias (a voltage in the "forward" direction) then the P-side of the diode is attached to the positive terminal and N-side is fixed to the negative side of the battery which is connected, current flows freely through the device. The forward bias decreases the thickness of potential barrier(The potential barrier barrier in which the charge requires additional force for crossing the region)

Reverse Bias, When a diode is Reverse bias(a voltage in the "backward direction) then the P-side of the diode is connected to the negative terminal and N-side is connected to the positive terminal of the battery which is connected. The reverse bias increases the thickness of the potential barrier resulting in the flow of no current.

 \Large\textbf{Answer to the Question "Resistance"}

The Forward bias decreases the resistance of the diode whereas the reversed bias increases the resistance of the diode. As in forward biasing the current is easily flowing through the circuit whereas reverse bias does not allow the current to flow through it.

<h2>_____________________________________ </h2><h2>Best Regards, </h2><h2>'Borz' </h2>

8 0
3 years ago
Other questions:
  • A 42.0-cm diameter disk rotates with a constant angular acceleration of 2.70 rad/s2. It starts from rest at t = 0, and a line dr
    15·1 answer
  • Can someone pls do this for me for 20 pts
    12·2 answers
  • Supervisors are subject to disciplinary action for engaging in retaliation.<br> True<br> False
    9·1 answer
  • A spring is laid horizontally on a table and a force of 62 N is required to stretch the spring 12 cm. The spring is then held ve
    15·1 answer
  • A baseball pitcher makes a big mistake and throws the ball straight up. If it reaches a maximum height of 15 m find the initial
    10·1 answer
  • What is produced when calcium reacts with fluorine in a synthesis reaction
    10·2 answers
  • The rings of Saturn occupy the region inside Saturn's Roche limit.
    15·1 answer
  • The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surfac
    14·1 answer
  • A tire placed on a balancing machine in a service station starts from rest and turns through 4.0 rev in 1.0 s before reaching it
    15·2 answers
  • Lực hút trái đất là dì
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!