Answer:
[tex]F_r \approx 978.3N[/tex]
[tex]\theta =44 \textdegree[/tex]
Explanation:
From the question we are told that
Connie pulls with a force of [tex]F_c=200 N[/tex]
At an angle [tex]\theta _c=20 \textdegree[/tex]
Randolph pulls with a force of [tex]F_R=800 N[/tex]
At an angle [tex]\theta _R=50 \textdegree[/tex]
Generally the horizontal axis can mathematically be represented as
[tex]f_x=f_ccos\theta _c+F_Rcos\theta _R[/tex]
[tex]f_x=200*cos20+800*cos50[/tex]
[tex]f_x=702.2N[/tex]
Generally the vertical axis can mathematically be represented as
[tex]f_y=f_csin\theta _c+F_Rsin\theta _R[/tex]
[tex]f_y=200*sin20+800*sin50[/tex]
[tex]f_y=681.24N[/tex]
Generally the resultant force [tex]F_r[/tex] is mathematically given by
[tex]F_r=\sqrt{f_x^2+f_y^2}[/tex]
[tex]F_r=\sqrt{702.1686119^2+681.2395832^2}[/tex]
[tex]F_r=978.3230731N[/tex]
[tex]F_r \approx 978.3N[/tex]
Generally the Direction [tex]\theta[/tex] of force is mathematically given by
[tex]\theta =tan^-^1(\frac{f_c}{f_y})[/tex]
[tex]\theta =tan^-^1(\frac{681.23}{702.16})[/tex]
[tex]\theta =44 \textdegree[/tex]
How much GPE is stored when an 80kg astronaut climbs to the top of a 5m high lunar lander? The gravity strength on the moon is 1.6N/kg.
Answer:
The GPE, stored is 640 Joules
Explanation:
The given parameters are;
The given mass of the astronaut, m = 80 kg
The height of the top of the lunar lander to which the astronaut climbs, h = 5 m
The gravity strength on the moon, g = 1.6 N/kg
The Gravitational Potential Energy, GPE, stored is given according to the following equation;
GPE stored = m·g·h
Therefore, by substituting the known values, we have;
GPE Stored = 80 kg × 1.6 N/kg × 5 m = 640 Joules
The GPE, stored = 640 Joules.
Weight is the amount of matter in an object true or false
Answer:
False.
Explanation:
Mass is the amount of matter in a given object. Weight is the force acting on an object due to gravity.
Answer:
False
Explanation:
Weight is the act of pulling an object towards the earth surface so weight is a force to amount
What are the scientific principles of physical science
Answer:
Describing and measuring motion. Newton's laws of motion. Forces, weight, and mass. Momentum and conservation of momentum.
The theory of gravity.
Energy, work, and power. Motion, position, and energy.
Explanation:
Answer:
lOl can i have brainliest
Explanation:
a body accelerates uniformly from rest at 2m/s square. calculate it's velocity after traveling 9m.
Answer:
6m/s
Explanation:
Given parameters:
Initial velocity = 0m/s
Acceleration = 2m/s²
Distance = 9m
Unknown:
Final velocity = ?
Solution:
To solve this problem, we use the expression below:
v² = u² + 2as
v is the final velocity
u is the initial velocity
a is the acceleration
s is the distance
v² = 0² + (2 x 2 x 9) = 36
v = 6m/s
What is a common criticism of both the Milgram experiment and the Stanford Prison experiment?
What is meant by net force?
Factor the expression 27x-18y
Answer:
9(3x-2y)
Explanation:
27x-18y, the common factor here is 9
9(3x-2y)
an electric lamp transfers 500j in 5s what is it’s power
Explanation:
An electric lamp transfers 500j in 5s
So in 1s = 500/5
= 100
So, it's strength is 100j/s
So, 100j in 1s
Eliza starts from a house and skateboards 10 meters towards the north, then turns back and skateboards 4 meters back to the south. What is Eliza 's displacement from the house?
Answer:
6m
Explanation:
If Eliza starts from a house and skateboards 10 meters towards the north, her distance will be +10m (moving towards positive y direction)
If she then turns back and skateboards 4 meters back to the south, her distance will be -4m (along the negative y direction)
The displacement from the house is 10m - 4m = 6m
Where on this diagram does the ball have the highest point of gravitational potential energy?
how far will a body move in 4 seconds if uniformly accelerated from rest at the rate of 2m/s square
Answer:
16m
Explanation:
Given parameters:
Time = 4s
Initial velocity = 0m/s
Acceleration = 2m/s²
Unknown:
How far will the body move = ?
Solution:
To solve this problem, we use the expression below:
s = ut + [tex]\frac{1}{2}[/tex] at²
s is the distance
u is the initial velocity
t is the time
a is the acceleration
s = (0 x 4) + ( [tex]\frac{1}{2}[/tex] x 2 x 4²) = 16m
How does the energy in the light of the aurora borealis compare to the energy as an excited electron returns to its original energy level?
twice the energy
one-third of the energy
half of the energy
equal to
Answer:
I THINK IS HALF OF THE ENERGY
Explanation:
PLEASE MARK ME AS BRAINLIEST
Answer:
equal to
Explanation:
(Not for cheating,just for help)
How does the energy in the light of the aurora borealis compare to the energy as an excited electron returns to its original energy level?
twice the energy
one-third of the energy
equal to
half of the energy
What do these two changes have in common? your breath becoming visible on a cold day building a tower out of magnetic blocks
difference between MKS and CGS system pls give answer in box
Answer:
Explanation:
MKS stands for Meter, Kilogram and second. In this system of unit mass is given in Kilogram, length in meter and time in second. ... CGS system stands for Centimeter- Gram- Second system. In CGS system, length is measured in centimeters mass is measured in grams and time is in seconds.
Which element in the 18th column of the periodic table (shown below) has the largest radius?
He
Ar
Xe
Rn
Answer: Rn :)))) no explanation needed
what is the velocity ratio of n inclined plane? Write
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
The person protected by insurance policy
Answer:
Jake from state famr
Explanation:
Can someone pleaseeee help if you’re correct I’ll give u brainlist
Answer:
Explanation:
The corona virus Vaccine will have some side effects like soreness in injection area but this will only last for a couple of days. I believe the answer is that there is no long term affect.
Fred takes a personal assessment that tells him that he would be great in the Agriculture, Food, and Natural Resources career cluster. What did Fred most likely mark as interests?
A-the justice system, horticulture, raising animals
B-being outdoors, supporting arguments, fixing broken items
C-being outdoors, horticulture, raising animals
D-fixing broken items, researching topics, leadership skills
Answer:
yes it is C
Explanation:
*need help asap! on a timer* Please select the word from the list that best fits the definition
Simplified diagram that shows the movement of an object as a series of single points
Answer:
particle model
Explanation:
A particle model is a simplified version of a motion diagram in which the object in motion is replaced by a series of single points.
a
It do
While doing dishes, Zvi drops his
3.0x10 3kg platinum wedding band
into the dishwater, displacing a
volume of 1.40x107m3 of water,
what is the density of the platinum
band?
n
CSS c
sion
im
al
Select one:
a. 2.56x104 kg/m3
b. 1.0x104 kg/m3
Di
c. 0.5x104 kg/m3
IL
d. 2.14x104 kg/m3
IL:
Answer:
d. 2.14 x 10⁻⁴ kg/m³
Explanation:
Density is defined as the mass of an object per unit volume occupied by that object. The formula of density is, therefore, given as follows:
[tex]\rho = \frac{m}{V}[/tex]
where,
ρ = density of platinum band = ?
m = mass of platinum band = 3 x 10³ kg
V = Volume displaced by Platinum band = 1.4 x 10⁷ m³
Therefore,
[tex]\rho = \frac{3\ x\ 10^{3}\ kg}{1.4\ x\ 10^{7}\ m^{3}}\\\\\rho = 2.14\ x\ 10^{-4}\ kg/m^{3}[/tex]
Hence, the correct option is:
d. 2.14 x 10⁻⁴ kg/m³
Unlike eukaryotes, prokaryotes do not have:
A. DNA
B. cytoplasm
C. cell walls
D. a membrane bound nucleus
D is the answer
Unlike eukaryotes, prokaryotes have no membrane-bound organelles. This means that they lack a nucleus, mitochondria, and other advanced cell structures
Mike was driving 30km/hr and slowed to 20km/hr in 10 seconds what is his acceleration? (number only)
Answer:
-0.28 m/s²
Explanation:
acceleration, a = (v - u)/t where u = initial velocity = 30 km/hr = 30 × 1000/3600 = 8.33 m/s and v = final velocity = 20 km/hr = 20 × 1000/3600 = 5.56 m/s and t = time = 10 s.
Substituting the values of the variables into the equation, we have
a = (v - u)/t
= (5.56 m/s - 8.33 m/s)/10 s
= -2.77 m/s ÷ 10 s
= -0.277 m/s²
≅ -0.28 m/s²
Final Exam
5 seconds after starting from rest, a car is moving at 45 m/s. What is the car's average acceleration?
Time= 5 sec
Initial velocity(u)= 0
Final velocity( v)=45 m\s
Accleration(a)=?
We have,
[tex]a = \frac{v - u}{t} [/tex]
[tex]a = \frac{45 - 0}{5} [/tex]
[tex]a = \frac{45}{5} [/tex]
a=9m\s
If I am in a Ferrari and I travelled for 3 hours at a speed of 270 km/h. How far did I travel?
Use the following formula:
distance velocity x time
a)810km
b)90km
c)810km/hr
Because of inertia, it will be ____ to stop a larger object than a smaller object if they are both moving at the same speed.
Answer:
harder
heavier objects resist change more than lighter objects.
Describe the speed of a planet as it revolves around the sun (hint Kepler's second law)
Why does a person in a freely falling elevator
feel weightless?
Answer:Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.
Explanation:
Calculate the frequency (v) in Hertz (Hz) of a wave that has a wavelength of 4.71 meters.
Answer:
6.37 x 10⁷Hz
Explanation:
Given parameters:
Wavelength = 4.71m
Unknown:
Frequency = ?
Solution:
To solve this problem, we use the expression below:
V = F∧
V is the velocity = 3 x 10⁸m/s
F is the frequency
∧ is the wavelength
3 x 10⁸ = F x 4.71
F = 63694267.52Hz = 6.37 x 10⁷Hz
Two identical books are placed on a bookshelf. Book number 1 is on a shelf one meter above the floor
Complete question is;
Two identical books are placed on a bookshelf. Book 1 is on a shelf one meter above the floor and Book 2 is on a shelf two meters above the floor.
Which statement best compares the potential energy of the books.
A) Book 2 has twice as much potential energy as Book 1
B) Book 1 has twice as much potential energy as book 2
Answer:
A: Book 2 has twice as much potential energy as Book 1
Explanation:
Formula for potential energy is;
P.E = mgh
Where;
m is mass
g is acceleration due to gravity
h is height
Now, they are identical books and thus will have the same mass while acceleration due to gravity remains constant.
For book 1 which is 1 metre above the floor;
P.E = mg × 1
P.E = mg
For book 2 which is 2 metres above the floor;
P.E = mg × 2
P.E = 2mg
We can see that potential energy for book 2 is twice that of book 1.
Thus,option A is correct.
Answer:
a
Explanation:
