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
Taya2010 [7]
3 years ago
9

Active immunity is passed on from a mother to her baby.

Physics
1 answer:
viva [34]3 years ago
3 0
True.The immune system in babies. Antibodies are passed from mother to baby through the placenta during the last three months of pregnancy.
You might be interested in
If the strings have the same thickness butdifferent lengths, which of the following parameters, if any, willbe different in the
gizmo_the_mogwai [7]

Answer:

1.Length is one of the four factors on which the wave frequency depends. So if the length of the string changes then there will be a change in the vibration of string. So in this case if the lengths are different then the wave frequency of both will be different.

2. Wave speed will be the same as it depends on tension and linear density of it.

3.  Wavelength itself is find out by the length of string so it depends on length and it will vary with the lengths of strings.

Explanation:

7 0
3 years ago
Upward pull of 850 N on a 81.6 kg bale of hay. What is the magnitude of the bales acceleration?
Helen [10]

Weight = (mass) x (acceleration of gravity).

When I calculate the weight of the 81.6 kg, the number I use for gravity
is 9.807 m/s².  That gives a weight of 800.25 N, so I think that's where the
question got the crazy number of 81.6 kg ... whoever wrote the problem
wants the hay to weigh 800 N, and that's what I'll use for the weight.

The forces on the bale of hay are gravity: 800N downward, and the
guy on the truck with the pitchfork pulling upward on it with 850 N. 
The net force on the bale is (850 - 800) = 50 N upward.

Use Newton's second law of motion:  (Net force) = (mass) x (acceleration)

Divide each side by 'mass' :     
      
                        Acceleration = (net force)/(mass)

On the hay wagon,             

                        Acceleration = (50 N upward) / (81.6 kg) = <em>0.613 m/s² upward</em> 

5 0
3 years ago
A focal arrangement that has a thin lens that the light passes through before traveling down the tube to the objective mirror is
erica [24]
The correct answer for the question that is being presented above is this one: "Schmidt-Cassegrain focus." A focal arrangement that has a thin lens that the light passes through before traveling down the tube to the objective mirror is a Schmidt-Cassegrain focus.
Here are the following choices: 
a. Cassegrain focus
b. Newtonian focus
c. Schmidt-Cassegrain focus
<span>d. Schmidt focus</span>
4 0
3 years ago
An elevator filled with passengers has a mass of 1603 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 f
Galina-37 [17]

Answer:

T = 17649.03 N = 17.65 KN

Explanation:

The tension in the cable must be equal to the apparent weight of the passenger. For upward acceleration:

T = W_A = m(g+a)\\

where,

T = Tension in cable = ?

W_A = Apparent weight

m = mass = 1603 kg

g = acceleration due to gravity = 9.81 m/s²

a = acceleration of elevator = 1.2 m/s²

Therefore,

T = (1603\ kg)(9.81\ m/s^2+1.2\ m/s^2)\\\\

<u>T = 17649.03 N = 17.65 KN</u>

8 0
2 years ago
speed of sound is 343 Ms at 20 degrees Celsius. The frequency heard from the sound is 256 Hz. what is the sounds wavelength?
Lina20 [59]
S= 343m/s
F=256Hz

WL= 343ms/256-1
WL=V/F

 = 1.339844m     
7 0
3 years ago
Other questions:
  • Dalvin pushed a 20kg obiect a distance of 10 meters in 30 seconds. He pushed a 40kg object a distance of 5 meters in 30 seconds.
    14·1 answer
  • Data: Atom Element Protons Neutrons Electrons Net Charge Mass Number 1 2 3 4
    11·1 answer
  • What factor affects the color of a star?
    9·2 answers
  • Chemical, gravitational, and elastic are examples of types of what? A. systems B. potential energy C. kinetic energy D. engines
    8·1 answer
  • The universal law of gravitation states that the force of attraction between two objects depends on which quantities?
    6·1 answer
  • A ball is thrown at 23.2 m/s inside a boxcar moving along the tracks at 34.9 m/s. What is the speed of the ball relative to the
    11·1 answer
  • Sometimes at a child's birthday party someone will rub a balloon on another's head and stick the balloon to the wall. this works
    14·2 answers
  • Match the technology that uses radio waves to the field in which it is used.
    5·1 answer
  • Only the smartest person in science can help me right now...
    11·1 answer
  • 4. A plane accelerates down a runway due to the constant resultant force of
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!