Given parameters:
Current of CD player = 0.1A
Source Voltage = 4V
Unknown:
Resistance = ?
Solution:
Based on Ohm's law;
V = I R;
V = voltage
I = current
R = resistance
Input the parameters and solve;
4 = 0.1 x R
R = [tex]\frac{4}{0.1}[/tex] = 40ohms
The resistance of the CD player is 40ohms
CAN SOMEONE PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
what is the winning game for badminton??? at least 5 sentence
Answer:
please give me more stars
Explanation:To win a game, a player must reach 21 points. However, if the game is tied at 20-20 (or 20-all) then you are required to win by two clear points. Unlike most sports, however, if the score becomes 29-29 (or 29-all), the player or team to score the 30th point will win the game.
If I have 10 m 20 N how much work do I have
Answer:
200 joule
Explanation:
force= 20N
distance=10m
work= ?
we know,
work= force×distance
=20N×10m
=200Nm or joule.
I’ve already figured out A. I just need help with B and C.
Answer:
595433.00
1456543.00
Explanation:
With the arrangement of colors of ROYGBIV, what is its arrangement based on its energy?
Answer:
red,orange,yellow,green,blue,indigo,violet
Explanation:
Answer:
Longest to shortest wavelength or Highest to lowest frequency
What is the velocity of a freely falling object 10 seconds after it is released from rest?
Answer:
around 98 meters per second.
Explanation:
Instantaneous velocity can be found with a equation.
Vf=Vi+At
Since it fell and had no initial velocity the equation becomes
Vf=At
The Acceleration is 9.8 m/s^2
So the velocity of it fell for ten seconds is
Vf=9.8m/s^2 * 10
Vf= 98 m/s
What causes a gravitational field around an object?
density
mass
shape
volume
Answer: It is mass
Explanation: It is caused by a bending of space-time.
Answer:
B - Mass
Explanation:
Edg
A frog falls from its rainforest tree. If we ignore wind resistance, (a) how much time does it take the frog to fall a distance of 12.0 m? (b) how fast is the frog falling at this point?
Answer:
Explanation:
a) Using the equation of motion
S = ut + 1/2gt²
S is the distance of fall
g is the acceleration due to gravity
t is the time taken
Given S = 12.0m, g = 9.81m/s^2, un= 0m/s
12 = 0+1/2(9.81)t²
12 = 4.905t²²²
t² = 12/4.905
t² = 2.446
t = √2.446
t = 1.56secs
b) To determine how fast is the frog falling at this point, we need to calculate the speed of the frog. Using the equaton v = u+gt
v = 0+9.81(1.56)
v = 15.34m/s
Hence the frog is falling at the rate of 15.34m/s
Why is speed a scaler quantity
Answer:
Speed is a scalar quantity it is the rate of change in the distance travelled by an object, while velocity is a vector quantity it is the speed of an object in a particular direction.
A 2 kg object is moving at a constant velocity of 15 m/s. What is its acceleration?
Answer:
The acceleration of the object is 0 m/s^2.
Explanation:
To solve this problem, we must remember that acceleration is equal to the change in velocity per unit time. Since we are given that the velocity is constant, this means it is unchanging, and the acceleration is therefore zero.
Hope this helps!
Which is an example of static friction?
a. pulling a skier behind a boat
b. pushing a box that is at rest
c. braking a car going down a hill
d. driving a car up a hill
Answer:
static friction is developed between 2 surfaces in state of rest so i think answer is c.Even though the wheel is in motion, the patch of the tire in contact with the ground is stationary relative to the ground, so it is static rather than kinetic friction.
The static friction is the hindrance to an object which is trying to move from stationary state. Among the given options, the example for static friction is pushing the box that is at rest.
What is static friction?The friction that occurs when people attempt to move a stationary object on a surface without actually causing any relative motion between the body and the surface.
The static frictional force is self-regulating, which means that it will always be equivalent to and opposite to the force applied. Static friction is zero for an object at rest on a flat table.
Static friction creates an equal and opposite force that keeps the book at rest when you push horizontally with a small force.The static friction force increases to match the force as you push harder.
The maximum static friction force is eventually exceeded, and the book moves. Therefore, option B is correct.
To find more on static friction, refer here:
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please helpp meee write the analysis and then answer the next pic
5 health benefits of physical activity
Answer:
reduce your risk of a heart attack.
manage your weight better.
have a lower blood cholesterol level.
lower the risk of type 2 diabetes and some cancers.
have lower blood pressure.
have stronger bones, muscles and joints and lower risk of developing osteoporosis.
If an object weighs 20 N and is sitting on the floor without moving, what must be the normal force of the floor acting on the box?
20 N up
20 N down
10 N up
10 N down
Answer:
20 N up
Explanation:
Since the object on the floor is sitting still. Based on Newton's law of force. Objects must have equal reaction and force against each other for still objects. So the answer is 20 N up. Since the force are equal on both sides making the object not moving.
A goose is flying due south at 20 km/hr, the goose is flying into a 15 km/hr due north wind. What is the gooses resultant velocity?
Answer:
5 km/hr due south
Explanation:
We need to subtract the two velocities due to the fact that they are in opposite directions (one due south and the other one due north). Then, for an observer located on earth, the goose will be flying at :
20 km/hr - 15 km/hr = 5 km/hr
Please help it’s physics and I suck at this subject :(
If your awesome, click here and be the first, to be the brainest
Answer:
im awesomeee
Explanation:
.
Answer:
Doubt I'll be first but imma try
Explanation:
Which of the following describes the rate at which work is done?
Force
Energy
Power
Impulse
Answer:
power
Explanation:
what is the property of medium
Answer:tension, density, temperature and elasticity
Explanation:
what are three effect of force
Answer:
1. Can change the state of an object(rest to motion/ motion to rest)
2. May change the speed of an object if it is already moving.
3. May change the direction of motion of an object.
Explanation: A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate.
1 hr 16 minutes equal how many minutes ?
Answer:
76 minutes.
Explanation:
There are 60 minutes in an hour + 16 minutes= 76 minutes.
a cheerleader throws herself into the air with a velocity of 12 m/s at an angle of 75 degrees above the horizontal. what are the x- and y components of her velocity (show work)
Answer:
Vx = 3.10 [m/s]
Vy = 11.59 [m/s]
Explanation:
To solve this problem we must decompose the velocity vector by means of the angle on the horizontal.
v = 12 [m/s]
Vx = 12*cos (75) = 3.10 [m/s]
Vy = 12*sin (75) = 11.59 [m/s]
Define time interval in your own words.
Answer:
An interval is a distinct measure of time or the physical or temporal distance between two things.
Explanation:
erson jogs 3.5 kilometers in 35 minutes, then 1.5 kilometers in 20 minutes, and finally 1.2 kilometers in 22 minutes. What is the jogger's average speed in km/min?
Answer:
3.5+35
1.5+1.2
20+22
42 + 16
= 58 ¹²
NEED HELP PLEASE. What are the reactions for the following?
If nitrogen, which has an electronegativity of 2.0, bonda with hydrogen, which has an electronegativity of 2.1, the bond between the two atoms will be classified as a(n) _________ covalent bond.
Answer: it’s Nonpolar
Explanation:
Atoms with small differences in their electronegativities are said to form nonpolar covalent bonds.
Answer:
caden
Explanation:
How long does it take sound to travel 3525 meters (speed of sound is 330 m/s)?
what we call the state in a human body if cerebrum is not functioning well
o be useful in science, a hypothesis must be *
A. measurable
B. observable
C. testable
D. correct
Answer:
the answer is c testable
Which of the following is a vector quantity?
A. 30 miles
B. 30 mph northwest
C. 55 m/s
D. 20 mph
Answer:
B) 30 mph northwest
Explanation: Vector quantities have both direction and magnitude. In this case the direction is northwest, and magnitude is 30 mph.
The following is a vector quantity, 30 mph northwest. Option B is correct.
What is a vector quantity?A vector quantity is a physical quantity that has both magnitude and direction. Examples of vector quantities include displacement, velocity, acceleration, force, and momentum.
In contrast, a scalar quantity is a physical quantity that has only magnitude and no direction associated with it. Examples of scalar quantities include speed, distance, mass, temperature, and time.
Here,
A vector quantity is a physical quantity that has both magnitude and direction. In this case, the magnitude is 30 mph and the direction is northwest, which makes it a vector quantity.
Option A is a scalar quantity because it only has a magnitude, but no direction associated with it. Option C is also a vector quantity because it has both magnitude and direction, but it is not given a direction in the question. Option D is a scalar quantity because it only has a magnitude.
Thus, the following is a vector quantity, 30 mph northwest. Option B is correct.
Learn more about vector quantity here:
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Which statement best describes the purpose of the vacuum inside a thermos?
A. It prevents particles from transferring thermal energy between the inner and outer bottles.
B. It increases heat loss through conduction between the outer and inner bottles.
C. It prevents heat loss through radiation, which requires matter to transfer energy.
D. It allows for more collisions between the particles that make up the outer and inner bottles.
Answer:
I think its a.
Explanation:
