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
stellarik [79]
3 years ago
14

What is the acceleration of the object?______ m/s2​

Physics
1 answer:
professor190 [17]3 years ago
8 0

Answer:

Explanation:

this graph show the decrease in velocity  with time

at time t=0 velocity is 40 m/sec

at time t=12sec velocity is decreases from 40 to 10 m/s

so the acceleration of the object at time=12 sec is

a=v/t

a=Δv/t

Δv=v1-v2=40-10=30 m/s

a=30/12=2.5 m/s^2

You might be interested in
HELLLPPP <br>why didnt people in marie curies time realize radioactivity could be harmfull?​
Anika [276]

Answer:Health

Throughout her work with radium, Marie was unaware of the effects of radioactivity exposure on the body. In her lab, she would keep tubes of radium in her pocket. [3] She began to suspect that radium negatively impacted health when one of her fellow researchers died of a blood disease, and then a few years later her personal assistant died of a blood disease. Even though she suspected that radium exposure was bad for her health, she did very little to monitor her own blood. In 1932, she broke her wrist and the break took much longer to heal than it should have. She then began to notice that her vision was deteriorating and radiation burns on her fingers were becoming more and more painful. Some days she felt too ill to even go to the lab, and finally on July 4, 1934, Marie died from aplastic anemia. [1]

Radium Exposure Treatments

Marie suspected that her health was being negatively impacted by radium exposure, but did nothing about it, most likely because there weren't any effective treatments for radium poisoning yet. At the time, scientists knew that radium was metabolized like calcium. In an attempt to remove it from the system, they manipulated calcium intake. [4] This caused little to no improvements, so parathyroid hormone was added to the treatment. Again, there was some reduction of radium, but not a significant amount. It wasn't until after Marie's death that they realized once radium is in the bones, it is extremely difficult to extract. The lack of therapies for radium exposure may explain why Marie just ignored her symptoms, because she was fully aware of her fate. [4]

© Jenna Gray. The author warrants that the work is the author's own and that Stanford University provided no input other than typesetting and referencing guidelines. The author grants permission to copy, distribute and display this work in unaltered form, with attribution to the author, for noncommercial purposes only. All other rights, including commercial rights, are reserved to the author.

Explanation:

5 0
3 years ago
Read 2 more answers
Calculate the surface area of a circle with radius 3.5 CM​
Sedaia [141]

........loke above in the picture

5 0
3 years ago
Hola como estan? Hey how are yall?
Svetlanka [38]

Answer:

awsome, you? :D

Explanation:

3 0
3 years ago
Read 2 more answers
A 2.3 g spider is hanging at the end of a silk thread. You can make the spider bounce up and down on the thread by tapping light
Georgia [21]

Answer:k=10.091\times 10^{-3} N/m

Explanation:

Given

mass of spider m=2.3 gm

Largest amplitude can be obtained by Tapping after every 3 second

i.e. Time period of oscillation is T= 3 s

considering spider to execute Simple harmonic motion

time of oscillation is given by

T=2\pi\sqrt{\frac{m}{k}}

substituting values

3=2\pi \sqrt{\frac{2.3\times 10^{-3}}{k}}

\frac{3}{2\pi }=\sqrt{\frac{2.3\times 10^{-3}}{k}}

0.477=\sqrt{\frac{2.3\times 10^{-3}}{k}}

(0.477)^2=\frac{2.3\times 10^{-3}}{k}

\frac{2.3\times 10^{-3}}{k}=0.228

k=10.091\times 10^{-3} N/m

8 0
3 years ago
Where are variables represented in a graph?
m_a_m_a [10]

Answer:variable or dependent values are represented on y axis of graph

Explanation:

4 0
3 years ago
Other questions:
  • Water has a density that is 13.6 times less than that of mercury. If an undersea vessel descends to 1.6 km, how much pressure do
    6·1 answer
  • why do you think it is difficult to use carbon-14 to determine the age of extremely old objects (over 50,000 years)?
    9·1 answer
  • Physical Science Pre-Test 2020-2021 Question: 1-10 The distance between Earth and the Moon was determined by measuring the time
    7·1 answer
  • A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that
    9·1 answer
  • What is the kinetic energy of a 1500 kg object that is moving at a speed of 71 meters per second​
    6·1 answer
  • A 400.0-m-wide river flows from west to east at 30.0 m/min. Your boat moves at 100.0 m/min relative to the water no matter which
    15·1 answer
  • I will give brainliest if right
    12·2 answers
  • If I want to calculate the normal force of an object on two legs but the weight of the object is not uniform throughout, how do
    11·1 answer
  • Which marine habitats would have the least access to primary producers?
    8·1 answer
  • Which process generates energy in the Sun?1) nuclear fusion2) nuclear fission3) chain reaction4) transmutation
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!