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
Reika [66]
3 years ago
10

An ant starts at one edge of a long strip of paper that is 34.2 cm wide. She travels at 1.3 cm/s at an angle of 61◦ with the lon

g edge. How long will it take her to get across? Answer in units of s.
Engineering
1 answer:
ankoles [38]3 years ago
7 0

Answer:

t = 30.1 sec

Explanation:

If the ant is moving at a constant speed, the velocity vector will have the same magnitude at any point, and can be decomposed in two vectors, along directions perpendicular each other.

If we choose these directions coincident with the long edge of the paper, and the other perpendicular to it, the components of the velocity vector, along these axes, can be calculated as the projections of this vector along these axes.

We are only interested in the component of the velocity across the paper, that can be calculated as follows:

vₓ = v* sin θ, where v is the magnitude of the velocity, and θ the angle that forms v with the long edge.

We know that v= 1.3 cm/s, and θ = 61º, so we can find vₓ as follows:

vₓ = 1.3 cm/s * sin 61º = 1.3 cm/s * 0.875 = 1.14 cm/s

Applying the definition of average velocity, we can solve for t:

t =\frac{x}{vx} = \frac{34.2 cm}{1.14 cm/s} =30.1 sec

⇒ t = 30.1 sec

You might be interested in
Helium gas expands in a piston-cylinder in a polytropic process with n=1.67. Is the work positive, negative or zero?
IRINA_888 [86]

Answer:

work will be positive when it is under polytropic expansion process

Explanation:

It states a polytropic  process with n equal to 1.67. there is a polytropic expansion that mean work is positive and if it was polytropic compression then it would   be negative

PV^n = const

P_1V_1 = P_2V_2

Also work during the process of polytropic is given as

W_{1-2} =\frac{P_1V_1 -P_2V_2}{n-1}

the work will be positive when it is under the polytropic expansion process

3 0
3 years ago
Why doesn't any one give as many points as i do for random questions on brainly
erastova [34]

good question i like to give about 20. i think people just are cheapskates for most of their time on this planet. didnt need the 50 though but thanks.

4 0
2 years ago
Read 2 more answers
I need your help to answer in the picture plss help me!​
Aloiza [94]

this looks like its the different phases of a single cylinder 4 stroke engine what are you doing in the picture or assignment though matching the numbers to the descriptions on the side?

3 0
3 years ago
What effect does air have on the acceleration of aircraft during flight?
scoundrel [369]
The effect would be the altitude of the air, the higher you go up the closer you are to space we’re there’s no oxygen and everything moves slow so when your trying to fly across the world it could feel like your moving slower
5 0
3 years ago
Reverse masking forms a soft edge on the panel.
valina [46]
True I think I’m not sure?
7 0
2 years ago
Other questions:
  • Find the linear speed of the bottom of a test tube in a centrifuge if the centripetal acceleration there is 5.4×104 times the ac
    6·1 answer
  • Consider the following program:
    15·1 answer
  • The grade is a measure of quality and it captures concentration levels (i.e., how pure a certain fraction is). If grade captures
    13·1 answer
  • Define ways in which you would go about networking to explore opportunities in your career field and obtain more information for
    11·1 answer
  • A Carnot heat engine absorbs 235 KW of heat from a heat source and rejects 164 KW to the atmosphere. Determine the thermal effic
    7·1 answer
  • Assume, X Company Limited (XCL) is one of the leading 4th generation Life Insurance
    9·2 answers
  • What energy type is represented in the picture?
    6·2 answers
  • What would happen if the brake pedal was released while the bleed screw was open during brake bleeding?
    7·1 answer
  • What Number Am I?
    13·1 answer
  • If we didn’t have the spark what could not happen?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!