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
Monica [59]
3 years ago
15

A net force of +15 N changes the momentum of an object by +100 kg-m/s. What is the time over which the force is applied? (please

explain!!)
A. 0.15 s
B. 6.7 s
C. 85 s
D. 150 s
Physics
1 answer:
sattari [20]3 years ago
3 0
As momentum / time = force
so; time = 100÷15

so your answer is 6.7 !!
You might be interested in
12. Which of the following statements about
aliya0001 [1]
A seems to be correct
8 0
2 years ago
Hi guys can you help me with finding advantages with nuclear power?
soldier1979 [14.2K]

Answer:

Low-cost energy. Although building nuclear power plants has a high initial cost, it’s relatively cheap to produce energy from them and they have low operating costs.

Reliable. One of the biggest benefits of nuclear energy is that it is a reliable power generation source.  

Zero carbon emissions. Nuclear power reactors do not produce any carbon emissions.  

Promising future energy supply.

8 0
2 years ago
Read 2 more answers
Inez uses hairspray on her hair each morning before going to school. The spray spreads out before reaching her hair partly becau
Tamiku [17]

Answer:

7.0\cdot 10^{-13}C

Explanation:

The magnitude of the electrostatic force between two charged objects is

F=k\frac{q_1 q_2}{r^2}

where

k is the Coulomb's constant

q1 and q2 are the two charges

r is the separation between the two charges

The force is attractive if the charges have opposite sign and repulsive if the charges have same sign.

In this problem, we have:

r=0.070 cm =7\cdot 10^{-4} m is the distance between the charges

q_1=q_2=q since the charges are identical

F=9.0\cdot 10^{-9}N is the force between the charges

Re-arranging the equation and solving for q, we find the charge on each drop:

F=\frac{kq^2}{r^2}\\q=\sqrt{\frac{Fr^2}{k}}=\sqrt{\frac{(9.0\cdot 10^{-9})(7\cdot 10^{-4})^2}{8.99\cdot 10^9}}=7.0\cdot 10^{-13}C

8 0
3 years ago
2. Categorize each statement as true or false. A cylindrical capacitor is essentially a parallel-plate capacitor rolled into a t
Kruka [31]

Answer:

Explanation:

False --> A cylindrical capacitor is essentially a parallel plate capacitor rolled into a tube. This is because a cylindrical capacitor comprises two cylinders.

False --> The dielectric constant indicates the distance by which the two plates of a capacitor are separated.

True --> The charge on a capacitor increases quickly at first, then much more slowly as the capacitor charges. This is because the charge on the capacitor increases exponentially.

False --> The voltage across a capacitor in an RC circuit increases linearly during charging. This is because the voltage increases exponentially.

True --> One of the principal purposes of a capacitor is to store electric potential energy.

True --> A capacitor charges rapidly when connected to an RC circuit with a battery. This is because a cylindrical capacitor is basically a parallel plate capacitor rolled into a tube.

6 0
3 years ago
In a closed system, _____ energy is equal to potential energy plus kinetic energy.
Kobotan [32]
The answer is mechanical
4 0
3 years ago
Read 2 more answers
Other questions:
  • Lizette works in her school’s vegetable garden. Every Tuesday, she pulls weeds for 15 minutes. Weeding seems like a never-ending
    15·2 answers
  • A dog runs 30 feet to the north then 5 feet to the south what is the displacement of the dog
    12·2 answers
  • If temp. gets cold resistance in thermostat increases so voltage across it increases AND LED lights brighter. I understand every
    12·1 answer
  • Which of the following is an idea that robert hutchings goddard introduced in his “further developments” to his research "a meth
    10·1 answer
  • When air is blown across the top of an open
    14·1 answer
  • A thin insulating rod is bent into a semicircular arc of radius a, and a total electric charge Q is distributed uniformly along
    6·1 answer
  • NO LINKS!!!!!! Help its urgent, PLEASE HELP!!!!!!!!!!!!!!!!
    14·1 answer
  • Which component of a galaxy is found in the space between the stars and gives the appearance of bright, colorful clouds?(2 point
    9·2 answers
  • What happens at the end of most cold currents?​
    13·2 answers
  • When a car driving up a hill with constant speed: I. its kinetic energy is decreasing. II. its potential energy is constant. III
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!