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
expeople1 [14]
3 years ago
5

Which are consider to be simple machines? Select all that apply.

Physics
1 answer:
Sedbober [7]3 years ago
7 0

Answer:

b

Explanation:

You might be interested in
Some waves can only travel through matter. What is this matter called?
ANTONII [103]
A water wave is an example of a mechanical wave. A wave that can travel only through matter is called a mechanical wave.
6 0
3 years ago
If an X-ray tube is operating at a current of 30.0 mA:a) How many electrons are striking the target per second? b) If the potent
Zina [86]

Answer:

Explanation:

A. Q= It

30E-3A=q

Ne = q

30E-3/1.6*10-19= N

N= 1.8*10^16 electrons

B. Power= I x v

= 30*10^-3A x 100*10^3v

= 3000watts

3 0
3 years ago
While playing football, Chris runs 4.5 m at 20⁰ south of west. If an opponent was trying to tackle him how far west and south wo
rewona [7]

Answer:

South = 1.5m

West =4.2m

Explanation:

Kindly see attached a rough draft of the situation

Step one

Given data

From the sketch the direction of the player is along the resultant of the triangle, corresponding to the Hypotenuse

Step two:

Hence for an opponent to tackle him towards the south, he must be at

sin θ= opp/hyp

sin 20=x/4.5

x=sin 20*4.5

x=0.342*4.5

x= 1.5m

Also, for an opponent to tackle him towards the south, he must be at

cos θ= adj/hyp

cos 20=y/4.5

y=cos 20*4.5

y=0.93*4.5

y= 4.2m

5 0
3 years ago
What is the restoring force of a spring stretched 0.35 meters with a spring contact of 55 newtons?
Vesna [10]
F=-kx = -19,25 answer D
6 0
3 years ago
Read 2 more answers
Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 5.85 m apart. If they shake the
quester [9]

Answer:

17.55 m/s

Explanation:

The number of times a wave will pass through a particular point is called frequency so, here the frequency is 3 Hz = f

The distance which is measured between two troughs or crests in a wave is called wavelength so, here the wavelength is 5.85 m = \lambda

Velocity is given by

v=f\lambda\\\Rightarrow v=3\times 5.85\\\Rightarrow v=17.55\ m/s

The propagation speed of the waves is 17.55 m/s

5 0
3 years ago
Other questions:
  • Relative to some reference points,your nose is in motion when you run. relative to others, it is not in motion. give one example
    15·1 answer
  • An organ system is best described by which of the following?
    5·2 answers
  • If you have 100 grams of different substances, the LEAST dense substance would have which volume?
    7·1 answer
  • Which of these statements best proves that electromagnetic forces are weaker than strong nuclear forces? Neutrons do not repel o
    8·1 answer
  • Measuring the diameter of a specific object might include which pair of SI units
    15·1 answer
  • Technician A says that wheel cylinder dust boots keep dust and moisture out of the cylinder bore. Technician B says that it is n
    9·1 answer
  • When elements bond together or when bonds of compounds are broken and form a new substance
    14·2 answers
  • ANSWER ASAP!!!!!
    13·1 answer
  • A soccer player runs 75m in a straight line down a soccer field in 11 seconds. What
    13·1 answer
  • A very rigid material—one that stretches or compresses only slightly under large forces—has a large value of __________.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!