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
lina2011 [118]
3 years ago
13

Evaluate the expression a+b when a=23 and b=45 . Write in simplest form

Physics
1 answer:
Viefleur [7K]3 years ago
6 0
If a = 23 and b = 45

a + b = ?

23 + 45 = 68
You might be interested in
An ion of iron has an 26 protons 30 neutrons and 23 electrons. what are its atomic number atomic mass and net charge?
Gemiola [76]
Atomic number = 26

Atomic mass = 26 + 30 = 56

Net Charge = 26 - 23 = +3

Hope this helps!
8 0
3 years ago
Read 2 more answers
A student is flying west on a school trip from Winnipeg to Calgary in a jet that has an air velocity of 792 km/h.The direction t
Akimi4 [234]

Answer:

The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] is 4.5° S of W

Explanation:

The given parameters are;

Velocity of Jet = 792 km/h

Direction of jet velocity = West

Velocity of wind = 62.0 km/h

Direction of wind velocity = North

Therefore, the jet has to have a component of 62.0 km/h South of West to compensate for the wind velocity

The direction of the plane, θ° South of West (S of W) to compensate for the wind is given as follows;

Tan \left (\theta   \right )= \dfrac{62}{792} = \dfrac{31}{396}

Therefore;

\theta = tan^{-1}\left (\dfrac{31}{396}   \right ) = 4.476^{\circ} \approx 4.5^{\circ}

The direction the plane would have to fly to compensate for a wind velocity of 62.0 km/h[N] = 4.5° S of W.

6 0
4 years ago
Say you want to make a sling by swinging a mass M of 1.9 kg in a horizontal circle of radius 0.042 m, using a string of length 0
padilas [110]

Answer: T= 715 N

Explanation:

The only external force (neglecting gravity) acting on the swinging mass, is the centripetal force, which. in this case, is represented by the tension in the string, so we can say:

T = mv² / r

At the moment that the mass be released, it wil continue moving in a straight line at the same tangential speed that it had just an instant before, which is the same speed included in the centripetal force expression.

So the kinetic energy will be the following:

K = 1/2 m v² = 15. 0 J

Solving for v², and replacing in the expression for T:

T = 1.9 Kg (3.97)² m²/s² / 0.042 m = 715 N

3 0
4 years ago
Which term describes a model in which a charge takes up no space and acts uniformly on its surroundings?
SVETLANKA909090 [29]
It's called point charge. Hope this helps.
7 0
4 years ago
Read 2 more answers
The image produced by a convex lens depends upon ____.
Karolina [17]
I recently did this topic in science class - the answer is A ;)
7 0
3 years ago
Read 2 more answers
Other questions:
  • What happens to an object as I️t absorbs radiant energy?
    5·2 answers
  • It is friction that provides the force for a car to accelerate, so for high-performance cars the factor that limits acceleration
    14·2 answers
  • An object is moving along a line with velocity v (t )equals A t squared space plus space B meters per second at time t seconds.
    10·1 answer
  • A meter stick whose mass is 260 grams lies on ice. You pull at one end of the meter stick, at right angles to the stick, with a
    15·1 answer
  • A wave has a wavelength of 3 meters and a Frequency of 15Hz. what is it’s velocity?
    9·1 answer
  • Freckles are a dominant trait in humans. Both of the girls have the genotype FF for freckles. If either one marries a man with n
    9·2 answers
  • UPHILL, MORE ENGINE POWER WILL BE NEEDED TO OVERCOME THE EFFECTS OF;
    10·1 answer
  • I have learned that the energy produced by moving electron is called
    6·1 answer
  • On a slope where does a marble have to most kinetic energy?
    5·1 answer
  • How much does a 10 kg
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!