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
Bumek [7]
3 years ago
11

I'll mark brainiest if you help me

Physics
1 answer:
Butoxors [25]3 years ago
5 0
Question 4 is true, question 5 is B.
You might be interested in
How much kinetic energy does a 50 kg object have if its moving at a velocity of 2 m/s?
bulgar [2K]

Answer:

C) 100 joules

Explanation:

The kinetic energy of an object is given by:

K=\frac{1}{2}mv^2

where m is the mass of the object and v its speed.

In this problem, we have an object of mass m = 50 kg and v = 2 m/s, so by using the formula we can find its kinetic energy:

K=\frac{1}{2}(50 kg)(2 m/s)^2=100 J

3 0
2 years ago
A man ran the 200m race within 19.19 seconds. Calculate the speed of the man during the race
natta225 [31]

Answer:

around 23 miles per hour

4 0
2 years ago
A 11.0 kg satellite has a circular orbit with a period of 1.80 h and a radius of 7.50 × 106 m around a planet of unknown mass. I
Anuta_ua [19.1K]

Answer:

Explanation:

Expression for times period of a satellite can be given as follows

Time period T = 1.8 x 60 x 60

= 6480

T² = \frac{4\times \pi^2\times r^3}{GM} where T is time period , r is radius of orbit , G is gravitational constant and M is mass of the satellite.

6480² = 4 x 3.14² x 7.5³ x 10¹⁸ / GM

GM = 4 x 3.14² x 7.5³ x 10¹⁸ / 6480²

= 3.96 X 10¹⁴

Expression for acceleration due to gravity

g = GM / R² where R is radius of satellite

20 = 3.96 X 10¹⁴ / R²

R² = 3.96 X 10¹⁴ / 20

= 1.98 x 10¹³ m

R= 4.45 x 10⁶ m

8 0
3 years ago
Is an example of a physical process that a physical geographer would study.
diamong [38]
D. The environment
Is the right answer
8 0
2 years ago
What does the zeroth law of thermodynamics allow us to define?
NeTakaya
It defines that if two thermodynamic systems are each in equilibrium with a third system, then they are in equilibrium with each other.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which volcanic hazard can block the sunlight and temporarily cool the Earth’s surface?
    13·2 answers
  • A body is accelerated continuously. What is the form of the graph
    5·1 answer
  • In a standard tensile test, a steel rod of 7 8-in. diameter is subjected to a tension force of 17 kips. Knowing that ν = 0.30 an
    6·1 answer
  • We have a solenoid made of stainless steel with 50 turns/m. The diameter of the wire is 2mm and when stretched it is 10m. What i
    12·1 answer
  • ASAP ONLY ACTUAL CORRECT ANSWERS
    11·2 answers
  • Why is it important to consider the experimental error in all the empirical results presented?
    9·2 answers
  • What are the factor that affect the efficiency of a pulley​
    8·1 answer
  • What is the role of the nervous system?
    13·1 answer
  • What is measurement?<br>​
    6·2 answers
  • Which statement best describes the electric field?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!