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
Kaylis [27]
1 year ago
15

WILL MARK BRAINLIST

Physics
1 answer:
ryzh [129]1 year ago
3 0

Answer:

Definition of envelop

transitive verb

1: to enclose or enfold completely with or as if with a covering

2: to mount an attack on (an enemy's flank)

You might be interested in
How much Tim in minutes will it take a car driving at 90km/hr to travel 27 kilometers
astraxan [27]

Answer:

18min

Explanation:

v=d/t

t=d/v= 27/90 =0.3hrs =18min

6 0
3 years ago
How much force is needed to accelerate a 20 kg mass at a rate of 4 m/s to the second power?
dusya [7]

Answer:

So 55 Newtons are needed.

6 0
3 years ago
Read 2 more answers
Calculate the magnitude and direction of the electric field 2.0 m from a long wire that is charged uniformly at λ = 4.0 × 10-6 C
Len [333]

Answer: 71.93 *10^3 N/C

Explanation: In order to calculate the electric field from long wire we have to use the Gaussian law, this is:

∫E*dr=Q inside/εo  Q inside is given by: λ*L then,

E*2*π*r*L=λ*L/εo

E= λ/(2*π*εo*r)= 4* 10^-6/(2*3.1415*8.85*10^-12*2 )= 71.93 * 10^3 N/C

6 0
2 years ago
house current is 120 volts. if a light bulb runs a current of 0.5 amps, what is the resistance of the bulb
Sauron [17]
Ohm's Law tells the relationship between voltage, current, and resistance.
It can be written in three different ways, depending on which ones you know,
and which one you want to find.

Here's the one we need:       

                           Resistance  =  (voltage) divided by (current)

                                               =  (120 V)  /  (0.5 Amp)

                                               =          240 ohms .
6 0
3 years ago
Two sticky spheres are suspended from light ropes of length LL that are attached to the ceiling at a common point. Sphere AA has
a_sh-v [17]

Answer:

  h’ = 1/9 h

Explanation:

This exercise must be solved in parts:

* Let's start by finding the speed of sphere B at the lowest point, let's use the concepts of conservation of energy

starting point. Higher

         Em₀ = U = m g h

final point. Lower, just before the crash

         Em_f = K = ½ m v_{b}^2

energy is conserved

         Em₀ = Em_f

         m g h = ½ m v²

         v_b = \sqrt{2gh}

* Now let's analyze the collision of the two spheres. We form a system formed by the two spheres, therefore the forces during the collision are internal and the moment is conserved

initial instant. Just before the crash

         p₀ = 2m 0 + m v_b

final instant. Right after the crash

         p_f = (2m + m) v

       

the moment is preserved

         p₀ = p_f

         m v_b = 3m v

         v = v_b / 3

         

          v = ⅓ \sqrt{2gh}

* finally we analyze the movement after the crash. Let's use the conservation of energy to the system formed by the two spheres stuck together

Starting point. Lower

          Em₀ = K = ½ 3m v²

Final point. Higher

          Em_f = U = (3m) g h'

          Em₀ = Em_f

          ½ 3m v² = 3m g h’

           

we substitute

         h’=  \frac{v^2}{2g}

         h’ =  \frac{1}{3^2} \  \frac{ 2gh}{2g}

         h’ = 1/9 h

6 0
2 years ago
Other questions:
  • Two or more waves combining to produce a wave with a smaller displacement is called _____.
    12·2 answers
  • Simple question..<br><br>Is speed the same as velocity?​
    7·2 answers
  • NEED ANSWER ASAP!!!!!!
    6·2 answers
  • If you have 100 grams of different substances, the LEAST dense substance would have which volume?
    7·1 answer
  • Exercise combined with a blank can help control weight
    11·1 answer
  • How can we use variations in luminosity to set limits on the size of an active galactic nucleus?
    9·1 answer
  • What property of matter makes metal pots a good choice for heating food? A.Electrical conductivity B.Magnetic properties C.Solub
    13·1 answer
  • Pls help me with this one
    13·1 answer
  • Carly rode her bike for 300 meters in 30 seconds. One can calculate her​
    9·1 answer
  • Match the description with the type of front
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!