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
katrin2010 [14]
3 years ago
5

An object with a mass of 100 grams is dropped from a certain height and has a velocity of 60 meters/second. if the potential ene

rgy of this object is 179.99 joules, how high was the object when it was dropped?
Physics
1 answer:
joja [24]3 years ago
6 0
KE=PE
1/2*m*V^2=mgh
1/2*0.100*(60)^2=0.100*10*h
0.05*3600=h
180 meters=h
You might be interested in
In introductory physics laboratories, a typical Cavendish balance for measuring the gravitational constant G uses lead spheres o
SVETLANKA909090 [29]

Answer:

F = 7.7*10^{-10}N

Explanation:

You need to be careful with units for this problem. The force will be:

F =\frac{K*m1*m2}{d^2}

F=\frac{6.67259 * 10^{-11}*1.56*21.1*10^{-3}}{(5.34*10^{-2})^2}

F=7.7*10^{-10}N

8 0
3 years ago
Which travels at the greatest speed?
Lera25 [3.4K]
Light through a vacuum. According to an official government sight, <em>nothing</em> travels faster than light through a vacuum.
6 0
4 years ago
Please answer this question given in the picture
elena-s [515]

A plane mirror forms a virtual image behind the mirror. The image is as far behind the mirror as the object is in front of it. A cannot see his image because the length of the mirror is too short on his side. However, he can see the objects placed at points P and Q, but cannot see the object placed at point R



Hope this helps Buddy!


~ Courtney

6 0
4 years ago
True or False: In a p-n junction diode, the absolute value of the electric field is the largest at the metallurgical junction (e
Delvig [45]

Answer:

false

Explanation:

6 0
3 years ago
Although 0 dB is often referred to as the lower threshold of human hearing, it is important to realize that the human ear is not
d1i1m1o1n [39]

Answer:

a) 3000 Hz;

b) 30 dB;

c) 1000 times.

Explanation:

a) From the human audiogram given on the figure below the black line represents the threshold for hearing the sound at each frequency. We see that the least intensity is necessary for the frequency of about 3000 Hz.

b) Using the same audiogram we see that we would need the sound of the intensity of about 30dB.

c) The least perceptible sound at 1000 Hz must be 0dB while at 100 Hz it is 30dB. These are logarithmic quantities. To transform them to the linear quantities we use the formula

I(\text{in dB})=10\log\frac{I}{I_0(\text{at }1000\text{ Hz})},

where  I_0(\text{at }1000\text{ Hz}) is the hearing threshold at 1000 Hz.

Therefore we have the following

0\text{ dB}=10\log\frac{I_1}{I_0(\text{at }1000\text{ Hz})}\quad 30\text{ dB}=10\log\frac{I_2}{I_0(\text{at }1000\text{ Hz})}

I_1 is the threshold at 1000Hz and I_2 is the threshold at 100Hz.

By exponentiating we have

10^0=\frac{I_1}{I_0(\text{at }1000\text{ Hz})},\quad 10^3=\frac{I_2}{I_0\text{at }1000\text{ Hz}}.

Now dividing these two equations we get

\frac{I_2}{I_1}=\frac{10^3}{10^0}=1000.

Therefore, the least perceptible sound at 100Hz is 1000 times more intense than the least perceptible sound at 1000Hz.

Note: I got these values unisng the audiogram that is attached here. The one that you have might be slightly different and might yield different answers.

7 0
3 years ago
Other questions:
  • A rocket is launched at an angle of 56.0 degrees above the horizontal with an initial speed of 105 m/s. The rocket moves for 3.0
    14·1 answer
  • Someone HELPPPPPPPPP<br> MARKING BRAINLIST JUST CHECK WORK<br> (15 points)
    8·1 answer
  • Concept Simulation 20.4 provides background for this problem and gives you the opportunity to verify your answer graphically. Ho
    6·1 answer
  • What property of matter must be overcome in order for the gummy bear to shoot out of the cup?
    12·1 answer
  • Which statement most accurately describes the second law of thermodynamics?
    12·1 answer
  • Two large rectangular aluminum plates of area 180 cm2 face each other with a separation of 3 mm between them. The plates are cha
    14·1 answer
  • A soccer ball is dropped from a height of 2 m and falls to the floor.
    5·1 answer
  • What is any push or pull on an object called?
    6·1 answer
  • 1. What could scientists learn by using the Law of Superposition?
    14·2 answers
  • Two electrodes (0.68 mm apart) in your car's spark plug are subject to a 3.5 kV potential difference. What magnitude electric fi
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!