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
LUCKY_DIMON [66]
2 years ago
11

Astronomers currently estimate the age of the universe to be:.

Physics
1 answer:
lina2011 [118]2 years ago
7 0
Nearly 14 billion years, according to astronomers. Happy to help!
You might be interested in
two identical-looking, large, round balls are placed in front of you. one is filled with feathers and the other is filled with s
Lelu [443]
If you apply a little bit of force, one will move easier than the other since it is lighter.
3 0
3 years ago
In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. A r
IrinaK [193]

Answer:

570 N

Explanation:

Draw a free body diagram on the rider.  There are three forces: tension force 15° below the horizontal, drag force 30° above the horizontal, and weight downwards.

The rider is moving at constant speed, so acceleration is 0.

Sum of the forces in the x direction:

∑F = ma

F cos 30° - T cos 15° = 0

F = T cos 15° / cos 30°

Sum of the forces in the y direction:

∑F = ma

F sin 30° - W - T sin 15° = 0

W = F sin 30° - T sin 15°

Substituting:

W = (T cos 15° / cos 30°) sin 30° - T sin 15°

W = T cos 15° tan 30° - T sin 15°

W = T (cos 15° tan 30° - sin 15°)

Given T = 1900 N:

W = 1900 (cos 15° tan 30° - sin 15°)

W = 570 N

The rider weighs 570 N (which is about the same as 130 lb).

6 0
3 years ago
Which of Newton's motion laws BEST explains HOW a rock accelerates when it is dropped off a bridge?
ki77a [65]

Answer:

a

Explanation:

6 0
3 years ago
Read 2 more answers
Choose the correct words from the box to complete the definition of resistance.
zzz [600]

Answer:

Opposition of passing a electric circuit

6 0
3 years ago
What is the mass of a man who accelerates 4 m/s2 under the action of a 200 N net force?
Over [174]

Answer:

\huge  \boxed{ \boxed{50 \:   kg }}

Explanation:

The mass of the man can be found by using the formula

m =  \frac{f}{a}  \\

f is the force

a is the acceleration

From the question we have

m =  \frac{200}{4}  \\

We have the final answer as

<h3>50 kg</h3>

Hope this helps you

7 0
3 years ago
Other questions:
  • What is mass times acceleration?
    6·1 answer
  • A toboggan having a mass of 10 kg starts from rest at A and carries a girl and boy having a mass of 40 kg and 45 kg, respectivel
    15·1 answer
  • Two students are relaxing in their dorm room and are too lazy to get up and shut the door. One of the students suggests throwing
    13·2 answers
  • The heart rate that indicates your fitness level is the
    6·1 answer
  • Our body contains ______________ potential energy from food we have eaten.
    8·1 answer
  • Which are true of gamma radiation?
    15·1 answer
  • MELAINE complete a long distance run at the average speed of 60 mph if it takes her 3 hours how far did she Run
    14·1 answer
  • A 4.00 m long, massless beam rests horizontally on a support 3.00 m from the left
    6·1 answer
  • A lack of precision in scientific measurement typically arises from?
    9·1 answer
  • A motorcycle moving at 50 km/h skids 10 m with locked brakes. How far will it skid with locked brakes when traveling at 150 km/h
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!