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
melamori03 [73]
3 years ago
7

I need an answer fast plz​

Physics
1 answer:
Zina [86]3 years ago
8 0

Answer:

L = 1.5 [m]

Explanation:

To find the Force Z we must perform a sum of forces on the Y-axis equal to zero, (it is equal to zero since there is no movement, the beam is in equilibrium).

ΣFy = 0

- 30 - 20 - 40 + Z = 0

Z = 90 [N]

Now to find the length of the beam, we must perform a sum of moments equal to zero at the midpoint of the beam, where the load Z is applied.it is important to clarify that the moment generated by the force of 30[N] tends to rotate the beam counterclockwise (is taken as positive), while the load of 20 [N], tends to rotate the beam Clockwise (is taken as negative).

ΣM = 0

+ (30*0.5) - (20*x) = 0

15 = 20*x

x = 15/20

x = 0.75 [m] (this is the half of the distance)

L = 2*x

L = 2*0.75

L = 1.5 [m]

You might be interested in
The Slingshot is a ride for two people. It consists of a single passenger cage, two towers, and two elastic bands. Potential ene
Vitek1552 [10]

my bad I was in a herie last time can you please answer my question , I am going to give you the 5 points back for this question and extra 30 points ,

Explanation:

first its going to say 10 points for my question but after that I well make answer a small question and give you 30points. like whats your favorite color . stay tuned .

8 0
3 years ago
Which of the following statements is true about winds from the ocean? (2 points)
aleksley [76]

The correct answers are:

Winds from the ocean reduce the number of clouds.

Winds from the ocean are faster.

HOpe this helps!

7 0
3 years ago
Read 2 more answers
element x has five valence neutrons, element y has one valence electron and element z has one valence electron. which two of the
nikitadnepr [17]
I assume the element has 5 valence electrons (not neutrons).  The similar properties are shared between y and z  since they have the same number of valence electrons.  This is what is primarily responsible for chemical behavior. 
7 0
3 years ago
A bus travels 300 km south along a straight path with an average velocity of 85 km/h to the south. The bus stops for 22 minutes.
Kruka [31]

a) Answer;

= 6.72 hours

Explanation and solution;

velocity = distance over time  

Since we know the velocity and the distance, we can simply calculate time  

For the first part  

85 km/h = 300km / time  

time = 3.53 hours  

Then there is a 22 min stop, which is the same as 0.37 hours  

so far the trip is:  

3.53 + 0.37 = 3.9 hours  

then for the last stretch:  

78 km/h = 220 km / time  

time = 2.82 hours  

So the total trip is:  

3.9 + 2.82  = 6.72 hours

b) Answer;  

=  77.38 km/hr

Explanation and solution;

we take the total distance divided by the total time to get the average.  

total distance = 300 km + 220 km = 520 km  

total time = 6.72 hours  

Average velocity = 520 km / 6.72 hours =  77.38 km/hr


5 0
3 years ago
bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). In Part 2.2.4
serious [3.7K]

Answer:

Incomplete question: "A signal of 20.7 mV is measured at a distance of 29 mm and 15.8 mV is measured at 32.5 mm. Correct the data for background and normalize the data to the maximum value. What is the normalized corrected value at 32.5 mm?"

The normalized corrected value at 32.5 mm is 0.1638

Explanation:

The corrected light measurement at 29 mm is equal to:

20.7 - 5.1 = 15.6 mV

The corrected light measurement at 32.5 mm is equal to:

15.6 - 5.1 = 10.5 mV

To normalize the data to its maximum value means that the maximum value must be calculated and the data must be scaled using that value, as in this case the maximum value is 15.6 mm, then the normalized corrected value at 32.5 mm is equal to:

10.5 * 15.6 = 163.8 = 0.1638

6 0
3 years ago
Other questions:
  • Ralphie runs north 0.5 km, then turns east and runs 2.0 km, turns south and runs 1.5 km, turns west and runs another 1km. What i
    10·1 answer
  • The 10 Ω resistor in the figure is dissipating 40 W of power. (Figure 1) How much power is the 20Ω resistor dissipating?
    15·2 answers
  • How energy is transferred in a appliance
    6·1 answer
  • An induced emf is produced inA. a closed loop of wire when it remains at rest in a nonuniform static magnetic field.B. a closed
    15·1 answer
  • Which statement is true about the relationship between carrying capacity and population size?
    10·1 answer
  • A resistor is connected across an oscillating emf. The peak current through the resistor is 2.0 A. What is the peak current if:
    5·1 answer
  • In a physics experiment, two equal-mass carts roll towards each other on a level, low-friction track. One cart rolls rightward a
    7·1 answer
  • What force is required to cause a 5 kg bowling ball to accelerate at 4 m/s2​
    5·1 answer
  • The relationship between frequency and period is...
    12·1 answer
  • Whar determines the direction of ocean currents​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!