Answer:
a) x = 39.9 m
Explanation:
To find the components of a vector we can use trigonometric relationships. Since they indicate that the angle is 37º north of east, this angle is measured counterclockwise from the x-axis, therefore using trigonometry.
cos θ = x / d
sin θ = y / d
where the angle is 37º and the distance d = 50 m
x = d cos θ
y = d sim θ
let's calculate
x = 50 cos 37
y = 50 sin 37
x = 39.9 m
y = 30.1 m
No more energy can be removed from matter at
a. its freezing point.
c. absolute zero
b. 0°С.
d. 273 K.
For a substance to change from a gas to a liquid, what must happen to its particles?
6. Which statement best describe the relationship between temperature and thermal energy?
(1 Point)
Temperature is inversely related to thermal energy
Temperature is directly proportional to thermal energy
As temperature foes up, thermal energy goes down
Thermal energy is not related to energy
Answer:
Temperature is directly proportional to thermal energy.
Question 5
The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The
head of a hammer must be strong to resist what force?
Answer:
the nails
Explanation:
The force of the nail pushing in the opposite direction. The correct option is option D among all the given options.
What is force?A force in physics is an effect that changes the velocity of a mass-moving object, causing it to accelerate from rest, for example. It is a vector quantity since it can be a push or even a pull and always has magnitude and direction.
The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist the force of the nail pushing in the opposite direction.
Therefore, the force of the nail pushing in the opposite direction. The correct option is option D.
To know more about force, here:
https://brainly.com/question/10292695
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Your question is incomplete but most probably your full question was,
The head of a hammer is often made of steel. This makes the head heavy, which helps create a strong force for driving nails. Steel is also strong. The head of a hammer must be strong to resist what force?
A The force of the air resistance on the moving hammer
B The force of the person using the hammer
C The force of gravity pulling down on the hammer
D The force of the nail pushing in the opposite direction
An object is dropped from 20. meters above the moon. The acceleration due to gravity on the moon is 1.62 m/s^2
a. How long does it take for the object to impact the moon?
b. At what speed does it impact the moon?
Answer:
a. Approximately 3.21 seconds
b. Approximately 5.196 m/s
Explanation:
a. The height from which the object is dropped = 20 meters
The location of the occurrence = The moon
The acceleration due to gravity on the moon = 1.62 m/s²
The time it took the object to to impact the moon is given by the equation of free fall as follows;
h = 1/2·a·t²
Where;
h =The height from which the object is allowed to freely fall = 20 meters
a = The acceleration due to gravity on the moon = 1.62 m/s²
t = The time of motion of the object
Substituting the values, gives;
20 = 1/2 × 1.62 × t²
t² = 20/(1.2 × 1.62) ≈ 10.23 s²
t = √ 10.23 ≈ 3.21 s
The time in motion of the object before impact, t = 3.21 seconds
b. The final speed, v is given from the equation for speed under free fall, which is presented as follows;
v = u + a·t
Where
u = The initial vertical velocity = 0
Substituting the values gives;
v = 0 + 1.62 × 3.21 ≈ 5.196 m/s
The final speed, v with which the object impacts the moon ≈ 5.196 m/s
A wave has a speed of 23 m/s and a frequency of 13 Hz. What is the wavelength?
Answer:
1.76923077 meters
Explanation:
wavelength is denoted by the letter lambda it is equal to the speed (v) of a wave in a medium (air , water, light) divided by frequency , equals wavelength . so wavelength = v/f or = 23m/s ÷13hz
Breaking is a result of friction between the brake linings and your foot.
A. True
B. False
Which of the following is a characteristic of electromagnetic waves?
A: they are all visible
B: they have a purely particle nature
C: they can travel with or without a medium
D: they cannot travel very fast
Mark is pushing a box down the hall. Mark is using 5N to push the box 20m. How much work is Mark doing?
Answer:
The answer is 100 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distanceFrom the question
force = 5N
distance = 20m
We have
workdone = 5 × 20
We have the final answer as
100 JHope this helps you
PHYSICAL SCIENCE, PLEASE HELP!
Which items are matter?
Answer:
Mobile phone & battery.
A driver in a 500 kg car going 20 m/s sees a large box in the middle of the road 100 meters away. How much net force is required to get the car to stop without hitting the box?
WILL GIVE BRAINLY AND 50 POINTS
Answer:
620
Explanation:
Answer:
100
correct me if I am wrong
HEY CAN ANYONE PLS ANSWER DIS!!!!!!!!
Answer:
Distillation
Explanation:
Answer:
distillation is correct
Explanation:
hope it helps
If a boomerhing is thrown 10 m in a straight line and returns
exactly to the spot it was thrown what is its displacement?
Answer:
0
Explanation:
First of all, what is displacement?
It is the minimum distance covered by a moving object between initial and final position.
Since the boomerang comes back to its original position, the displacement is 0!