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
lapo4ka [179]
3 years ago
10

A draft is made of a plastic block with a density of 650kg/m^3, and its dimensions are 2.0mx3.0mx5.0m ,what is the raft's appare

nt weight in water?(hint:density of water=1.00x10^3kg/m^3
Physics
1 answer:
mixas84 [53]3 years ago
8 0
Weight in water = mass of block - mass of volume of displaced water
You might be interested in
Jack travels 80 km in 50 minutes. What is his speed in m/s?
Pie

Answer:

1.6 m/s?

Explanation:

80 ÷ 50 = 1.6 m/s

djdjdjksjsj

7 0
2 years ago
Which of the following is NOT a function of the lens in the eye?
tatyana61 [14]

Answer:

it is a light receptor that generates nerve signals that are sent to the brain

Explanation:

the lens are like the glasses, this means that is used to see things better. You just put them in your eye and that's all it's not connected to the brain

8 0
2 years ago
the average american receives 2.28 mSv dose equivalent from radon each year. Assuming you receive this dose, and it all comes fr
Dmitry [639]

Answer:

The approximate number of decays  this represent  is  N= 23*10^{10}  

Explanation:

 From the question we are told that

    The amount of Radiation received by an average american is I_a = 2.28 \ mSv

     The source of the radiation is S = 5.49 MeV \ alpha \ particle

 Generally

            1 \  J/kg = 1000 mSv

   Therefore  2.28 \ mSv = \frac{2.28}{1000} = 2.28 *10^{-3} J/kg

Also  1eV = 1.602 *10^{-19}J

  Therefore  2.28*10^{-3} \frac{J}{kg} = 2.28*10^{-3} \frac{J}{kg}  * \frac{1ev}{1.602*10^{-19} J} = 1.43*10^{16} ev/kg

           An Average american weighs 88.7 kg

      The total energy received is mathematically evaluated as

        1 kg ------> 1.423*10^{16}ev \\88.7kg  --------> x

Cross-multiplying and making x the subject

           x = 88.7 * 1.423*10^{16} eV

              x = 126.2*10^{16}eV

Therefore the total  energy  deposited is x = 126.2*10^{16}eV

The approximate number of decays  this represent  is mathematically evaluated as

            N = \frac{x}{S}

Where n is the approximate number of decay

   Substituting values

                             N = \frac{126 .2*10^{16}}{5.49*10^6}  

                                  N= 23*10^{10}  

                     

             

7 0
3 years ago
PLEASE HELP!!! WOULD REALLY APPRECIATE!
Eva8 [605]

Answer:

a. slope=rise/run

rise=0.02

run=-2

determined using the point (3,0.08) and (1,0.1) on the graph

slope=0.02/-2

= -0.01 or -1/100

b.area= area of trapizoid+ rectangle

((0.07+0.11)÷2)×4+1×0.07

0.36+0.07

=0.43$

c. the area represent the total cost after 5 hours

PLEASE MARK BRAINLIEST

3 0
2 years ago
I NEED THE RIGHT ANSWER ASAP NO LINKS !!!<br> This is a Science question
sdas [7]
3rd number line -5- -4 is -9
also it’s math not physics or science
8 0
2 years ago
Read 2 more answers
Other questions:
  • A container of negligible heat capacity has in it 456 g of ice at - 25 . 0°C . Heat is supplied to the container at the rate of
    10·1 answer
  • show answer No Attempt Treated as a projectile, what is the maximum range, in meters, obtainable by a person if he or she has a
    11·2 answers
  • What is the net force acting on a golf car travelling at a constiant speed of 5 mph?
    13·2 answers
  • A skillet is removed from an oven whose temperature is 450°F and placed in a room whose temperature is 70°F. After 5 minutes, th
    10·1 answer
  • Explain in detail what happens to the Earths surface after an earthquake due to the force of tension
    8·1 answer
  • Two UFPD are patrolling the campus on foot. To cover more ground, they split up and begin walking in different directions. Offic
    14·1 answer
  • What is an example of motion
    11·1 answer
  • A skydiver falls out of a plane from rest, and experiences no air resistance. Eventually, this skydiver reaches a velocity of 33
    13·1 answer
  • The sun doesn't set during what season and at what latitude?
    5·1 answer
  • A science student observes three lines in an emission spectrum, one red, one yellow, and one blue. Which one was caused by an el
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!