A dog walks 40. m west, then 10. m east and then 50. m south. What is the
distance and displacement traveled?
The total distance traveled by the dog is 100 m and the displacement of the dog is 58.31 m.
The given parameters;
Initial position of the dog, 40 m westSecond position of the dog, 10 m eastFinal position of the dog, = 50 southThe displacement of the dog is the change in its initial position and the final position.
The resultant of the dogs position in x-direction: = 40 m - 10 m = 30 m
The resultant of the dogs position in y-direction: 50 m
The magnitude of the displacement;
R² = 30² + 50²
R² = 3400
R = √3400
R = 58.3 m
The distance covered by the dog is the sum of all the positions of the dog.
Distance = 40 m + 10 m + 50 m
Distance = 100 m.
Thus, the total distance traveled by the dog is 100 m and the displacement of the dog is 58.31 m.
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Express the number in scientific notation: 4/100
Answer:
4*10^-2
Explanation:
for the scientific notation the first number must be between 1 and 10, so in this case it is 4. 4/100 is also equal to 0.04, and if we could the number of places before 4, there are two, therefore 4 times 10 to the power of -2
metals with low resistivity behave as_____
Answer:
At most temperatures, silver has lowest resistivity.
However, superconductors have zero resistivity, which is the lowest. Superconductors are real, they are primarily used in very powerful magnets (such as in CERN). Known superconductors require VERY low temperatures which require expensive technology.
There is ongoing research to find compounds that exhibit room temperature superconductivity. If (when?) one or more is found, major changes to electricity as we know it will result. Not only will we be able to make very powerful magnets (for use in very powerful motors, generators, etc.), but the power companies will be able to move electricity from the generator to the user without loss. Today typical power transmission losses are between 8% and 15%. There may also be important benefits to computer and processing capabilities.
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Representation in the House is based on
A. equality between states
B. a state's population
Answer:
state population
Explanation:
bestie you can find it on Constitution on article l
If a man walks 600 meters in 300 seconds, what was his speed in meters per second?
Answer:
His speed in meters per second was 2. Or, 2 meters per second.
Explanation:
How might you demonstrate respect for your instructors or a fellow students
Answer:
Being attentive is the best way to demonstrate respect.
Explanation:
Name any 2 physical quantities which have same dimensions.Can a quantity have unit but no dimensions?Explain
Answer:
uantities having units, but no dimensions : Plane angle,angular displacement, solid angle. These physical quantities possess units but they do not possess dimensional formulas.
Energy and work have the same dimensions force × distance.
Explanation:
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How is momentum calculated?
O A. By dividing mass by velocity
B. By subtracting velocity from mass
C. By multiplying mass by velocity
D. By adding mass and velocity
Momentum can be calculated by multiplying the mass of an object by the velocity of an object. Thus, the correct option is C.
What is Momentum?The momentum is a quantity which can be defined as the product of the mass and velocity of an object. It is an example of standard mechanical quantity. Momentum is a vector quantity, this means it possess both a magnitude and a direction. If "m" is an object's mass and "v" is its velocity, then the object's momentum p is:
p = m × v
The examples of momentum is whenever we toss a ball at someone as well as it smacks them square in the face. It indicates how difficult it would have been to stop the ball.
Therefore, the correct option is C.
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importance of international bureau of weights and measures Inthe world
Answer:
The international bureau of weights and measures is an international organization to bring about the unification of different measurement systems to make or establish international standards and prototypes, etc.
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What are some limitations to an H-R diagram
A pen cap floats in a plastic lemonade 3/4 full of water vif you squeeze the bottle the pen cap sinks to the bottom if you then let go of the bottle the pen cap floats to the surfce whe the bottle squeezed what ,if anything happens to the distance between the air molecules inside the bottle????????/
Answer:
The pressure of the air molecules inside the pen cap increases and the volume occupied by the air decreases such that the combined volume occupied by the pen cap and the air volume reduces while the combined mass of the pen cap and the air molecules remain the same
Given that density = The mass/Volume, we have that the density varies inversely as the volume, and as the volume reduces, the density increases
Upon squeezing, therefore, as the new combined density of the pen cap and the air molecules rises to more than the density of the water in the bottle, then, the pen cap air molecule is relatively more denser than the water, which will result in the pen cap sinking to the bottom of the bottle
Explanation:
9. You are heating a piece of glass and now want to pick it up, You should
a. Use a rag or paper towels
b. Pick up the end that looks cooler
c. Use tongs
d. Pour cold water on it
Answer:
c. use tongs
Explanation:
4) Why is it important to do a warm up with stretching and also a cool down with
stretching when exercising?
Answer:
Warming up may help reduce muscle soreness and lessen your risk of injury. Cooling down after your workout allows for a gradual recovery of preexercise heart rate and blood pressure.
Explanation:
- Approximately what are the coordinates of the Hawaii Hot
Spot?
(1) 50 N, 120 W
(3) 25 N, 158 W
(2) 25 N, 158 €
(4) 25 S, 158 E
Answer: (3) 25°N, 158°W
Explanation:
The Hawaii Hotspot is one of the most popular on the planet and is the reason the Hawaii islands were created as it created volcanoes under the Hawaii islands that erupted as the Pacific plate moved over them and then the lava cooled thereby forming the different Hawaii islands.
The approximate location of the hotspot is 25°N, 158°W in the pacific ocean.
what are the aerodynamics of a cow
Answer:
32
Explanation:
Answer:
There's nothing quite like placing random objects through some computational fluid dynamics software. As we can see, the forehead of the cow experiences a zone of high pressure, since a lot of the air is deflected from the front of the nose and straight to the head.
Explanation:
Hurricanes hit
regions more frequently because of the close proximity to large bodies of water.
Coastal
Mountainious
Midwestern
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car.
Answer: 8.1m/s^2
Explanation:
For this question, in order to solve it, we have to use the second equation of motion which will be:
s = ut + 1/2at^2
where,
u = initial velocity
v = final velocity
t = time
a = acceleration
Since u = 0, then
a = 2s/t^2
a = 2 × 110/5.21^2
a = 220/27.1441
a = 8.1m/s^2
What is your average speed in mph if you travel 15 miles in 2 hours and 30
minutes?
hey
Answer:
6 mph
Explanation:
mph = miles per hour
So 15 miles over 2.5hrs
So 15/2.5 = 6 mph
Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below.
A large black cross in a purple circle with a black line around the purple, with 10 small green balls dispersed within the purple circle.
What experimental evidence led to the development of this atomic model from the one before it?
Answer:
B: The colors of light emitted from heated atoms had very specific energies.
Explanation:
B: The colors of light emitted from heated atoms had very specific energies.
In a cinema theatre, why do we normally not hear echoes even though the sounds are loud?
Answer:
An echo is formed as a result of reflection of the original sound which returns to the listener. You might have experienced Echo in an EMPTY ROOM but no echo is produced after the room is occupied. To avoid echo from being produced the echo has to be absorbed.
Explanation:
Elements in a group or family can be expected to have similar:
In your own words, describe conservation of mass. Use examples to support your answer.
Answer:
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed
Explanation:
what will happen to products when we increase the amount of
reactants.
Answer:
Therefore, an increase in the concentration of a reactant will lead to a decrease in the amounts of all reactants and an increase in the amounts of all products.
Explanation:
How long will it take a projectile to hit the ground from a 400 m tall cliff when launched at 30 m/s horizontally?
19.55 sec
13.33 sec
9.03 sec
4.54 sec
Fast reply if possible
Explanation:
A golfer pulls on the eighteenth green at a distance of 5.0m from the hole. The ball rolls straight. In the positive direction, but overshoots the hole by 1.2m. The golfer then putts back to the hole and sinks the putt for par. What is the displacement of the ball?
Answer:
Explanation:
The initial position of the ball = - 5 .0 m from the hole .
It is negative because , direction towards the hole is positive so direction from the hole will be negative .
Final position of the ball = 0 m from the hole .
Displacement of the ball = Final position - Initial position
= 0 - ( - 5 ) = 5 .0 m
Displacement = + 5 m
PLEASE HELP ME, IM STUCK ON THIS QUESTION
Answer:
the correxct adnswer is d
Explanation:
lol
What is the trademark of the Harlem Globetrotters?
Here’s another one :(
which model would be classified as a physical model
Answer:
Model will be classified as a physical model since it is demonstrating a model in real life.
Explanation:
Answer:
Marshmallow answer
Explanation:
How long will it take to travel 84 miles if
you are traveling at a constant 70 miles
per hour?
quick omg ‼️ please
Answer:
The answer is 1.2 hoursExplanation:
To find the time taken given the velocity and distance covered we use the formula
[tex]t = \frac{d}{v} \\ [/tex]
where
t is the time
d is the distance covered
v is the velocity
From the question
d = 84 mi
v = 70 mi/h
We have
[tex]d = \frac{84}{70} = \frac{6}{5} \\ [/tex]
We have the final answer as
1.2 hoursHope this helps you
