Answer:
f = 485.62 N
Explanation:
Since, the bag is moving with some acceleration. Hence, the unbalanced force will be given as:
Unbalanced Force = Horizontal Component Applied Force - Frictional Force
Unbalanced Force = Fx - f
But, from Newtons Second Law of Motion:
Unbalanced Force = ma
comparing the equations:
ma = Fx - f
f = F Cos θ - ma
where,
f = frictional force = ?
F = Applied force = 593 N
m = mass of person = 49 kg
a = acceleration = 0.57 m/s²
θ = Angle with horizontal = 30°
Therefore,
f = (593 N)(Cos 30°) - (49 kg)(0.57 m/s²)
f = 513.55 N - 27.93 N
f = 485.62 N
A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3.2 km in 3.5 min. How FAST (m/s) is the car moving after this time?
answer them all please!!
Answer:
1. stomach
2. arteries
3. trachea
4. spinal cord
How can temperature influence the rate chemical reaction between an acid and a base that will make our rocket defy gravity and launch upward?
Answer:
Explanation:
Generally, an increase in temperature increases the rate of a chemical reaction. Consequently, when the temperature of a reaction is raised, the molecules present in the reaction interact faster by colliding with one another and surpassing the effective collision of such reaction to bring about a high reaction rate. Similarly, in the case of the rocket launch, the same process occurs as the temperature increase will cause an increase in the reaction rate leading the hydrogen from the acid to react explosively with the oxygen from the base to form water - this makes the rocket defy gravity and launch upward.
What are four pieces of evidence for continental drift?
A football player with a mass of 100 kg from runs from rest towards his opponent and hits him with a force of 500 Newtons 5 seconds later. What was his momentum before impact?
Answer:
2500kgm/s
Explanation:
Change in momentum is equal to impulse, numerically.
Ft=m( v-u)
But he begins from rest so u= 0
Then
Ft= mv
500(5)=mv
2500= mv
1. A plane flying horizontally at an altitude of 490 meters and having a velocity of 250 meters per second east, drops a supply packet to a work crew on the ground. It falls freely without a parachute. [Assume no wind and negligible air resistance.] A. Calculate the time required for the packet to hit the ground. (25 pts)
Answer:
t = 10 s
Explanation:
Given :
Altitude, h = 490 m
Initial velocity of a plane, u = 250 m/s
To find :
The time required for the packet to hit the ground. When it hits the ground its velocity will be 0. Let t is the required time. It can be calculated as follows :
[tex]t=\sqrt{\dfrac{2h}{g}} \\\\t=\sqrt{\dfrac{2\times 490}{9.8}} \\\\t=10\ s[/tex]
So, it will take 10 s to reach the ground.
If the force is applied to a car, then its acceleration will ___________ because of Newton's _____________.
What are indicative acts? FORENSICS
Answer:
Actions or behaviors that may have taken place before death.
Do you wanna know how I know? No.... You do not wanna know how I know that you know what I known that you know I know
Explanation:
You Know?
what is marketing according to AMA
Answer:
The new 2007 AMA defini- tion is as follows: Marketing is the activity, set of institutions, and processes for creating, communicating, delivering, and exchanging offerings that have value for customers, clients, partners, and society at large.
Explanation:
Which of the statements are true about the collision of two objects with different
masses based on Newton's laws of motion?
A. Each object experiences an equal and opposite force.
B. The more massive object will exert a greater force on the less massive object.
Each object will accelerate in an opposite direction from the other but at a
different rate.
D. The less massive object will accelerate due to the force of the collision, but the
more massive object will not.
Answer:
A. TRUE
B. TRUE
C. It depends on the mass of both the objects
D. TRUE
why people bleed from nose while climbing uphill rapidly
Answer:
because the presure it puts on your body same as if you go to deep in the water
Which two factors affect the amount of force seen in objects?
Answer:thanks
Explanation:xixo
gv
How many seconds are there in a calendar year,given that a calendar year has 365.24 days in it?
Answer:
31556736
Explanation:
Since there are 60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, and 365.24 days in a year, then you multiply all of those.
60*60*24*365.24 =
31556736
A transformer has 1000 turns on the primary coil.
The voltage applied to the primary coil is 230V a.c,
How many turns are on the secondary coil if the output
voltage is 46 V a.c.?
A)20 B)200 C)2000 D4000 E)8000
Answer:
200
Explanation:
Given parameters:
Number of turns in primary coil = 1000 turns
Primary voltage = 230V
Secondary voltage = 46V
Unknown:
Number of turns in secondary coil = ?
Solution:
To solve this problem, we have to use the expression for solving problems related with transformers;
[tex]\frac{Vs}{Ns}[/tex] = [tex]\frac{Vp}{Np}[/tex]
Vs is the secondary voltage
Ns is the number of secondary turns
Vp is the primary voltage
Np is the number of primary turns
Now insert the parameters and solve;
[tex]\frac{46}{Ns}[/tex] = [tex]\frac{230}{1000}[/tex]
46 x 1000 = 230Ns
Ns = 200
please help .-. its for physics
Answer:
your answer is correct
Canyon walls are eroded at a rate of approximately:
Group of answer choices
A half a centimeter per day.
B half a centimeter per year.
C one centimeter per day.
D one centimeter per year.
An object with mass 30 kg travelling as speed of 11 m/s receives an impulse of
240 kg m/s. What is the final velocity of the object?
Answer:
V₂ = 19 [m/s]
Explanation:
The final linear momentum will be equal to the sum of the initial momentum plus the momentum received. By means of the following equation, we can determine the final momentum.
[tex]m_{1}*v_{1} + IMP_{1-2} = m_{2}*v_{2}[/tex]
where:
m₁ = m₂ = mass = 30 [kg]
v₁ = velocity = 11 [m/s]
IMP₁-₂ = 240 [kg*m/s]
v₂ = final velocity [m/s]
[tex](30*11) + 240 = 30*V_{2}\\330 + 240 = 30*V_{2}\\v_{2}=19 [m/s][/tex]
The final velocity of the object is 19 m/s
The impulse is given by:
Impulse = m(v - u)
where m is the mass, v is the final velocity and u is the initial velocity.
Given that impulse = 240 kgm/s, u = 11 m/s, m = 30 kg. Hence:
Impulse = m(v - u)
240 = 30(v - 11)
8 = v - 11
v = 19 m/s
The final velocity of the object is 19 m/s
Find out more at: https://brainly.com/question/16980676
what happens to the particles in a substance during a physical change?
Answer:
In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy. ... Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas. Only their arrangement, energy and movement changes.
Explanation:
this is true because if you think about it if you put a pill in a glass of water it dissolves its like particles
If a tennis ball has a velocity of 18 m/s and a momentum of 1.06 kg • m/s, what is the mass of the tennis ball in grams? Round the answer to two significant figures.
Answer:
58 g
Explanation:
Momentum = mass* velocity
P=mv
P= 1.06 kg*m/s
M=?
V=18 m/s
1.06 kg*m/s=m(18m/s)
M=0.058 kg
0.058kg = 58 g
Answer:
59
Explanation:
edge 2021
What is the modern periodic table of elements?
A. A chart organizing all elements by their atomic mass
B. A list of all elements occuring in nature
C. A chart organizing all elements by their atomic number
D. A list of all elements created by humans
A car accelerates from rest at a rate of 3 m/s² for 4 seconds. How far did the car travel?
PLEASE help fasttt
Answer:
24m
Explanation:
Given parameters:
Initial velocity = 0m/s
Acceleration = 3m/s²
Time = 4s
Unknown:
Distance covered = ?
Solution:
To solve this problem, we apply the right motion equation:
S = ut + [tex]\frac{1}{2}[/tex]at²
S is the distance
u is the initial velocity
t is the time taken
a is the acceleration;
S = (0 x 4) + [tex]\frac{1}{2}[/tex] x 3 x 4²
S = 24m
find the amount and the compound interest on rupees 10000 for 2 years at 5% per annum compounded annually
Compound interest:
[tex]a = p( 1 + \frac{r}{n} ) { }^{nt} [/tex]
a = final amount
p = principal amount
r = rate of interest
t = time
n = no. of compounding periods per year
p = 10000
r = 5% = 5/100 = 0.05
t = 2
n = 1
[tex]a = 10000(1 + \frac{0.05}{1} ) {}^{2 \times 1} [/tex]
[tex]a = 10000(1 + 0.05) {}^{2} [/tex]
[tex]a = 10000(1.05) {}^{2} [/tex]
[tex]a = 10000(1.1025)[/tex]
[tex]a = 11025[/tex]
among 1 litre boiling water and red hot glowing nail which one has more amount of heat and why
Answer: The Water
Explanation:
The boiling litre of water has more volume and so has more heated molecules per cubic metre so it will have a higher amount of heat than the glowing nail.
To practically test this, put the glowing nail into a litre of cold water and record the final temperature when the nail has cooled down. Repeat this with the boiling litre of water. You will notice a higher final temperature with the boiling water indicating that it had more heat.
How are scientists able to predict when and where the next eclipse will occur?
Answer:
When the Earth and sun are perfectly lined up, then it will happen. They can tell when it's going to happen.
Explanation:
This is why it only happens in some places. Some days it's not sunny out, so it's not going to happen.
amp, is named after a person who was the person
Answer:
Explanation:
Named for 19th-century French physicist André-Marie Ampère, it represents a flow of one coulomb of electricity per second.
in humans what makes the sound vibration vibrate
Answer:
sound vibration of spicker
2. For every action there is an equal and opposite reaction. Which Newton's law is defined?
Answer:
newtons 3rd law
Explanation:
newtons thirs law states for every action there is an equal and opposite reaction.
Answer:
Newton Third law states that for every action there is an equal and opposite reaction
calculate the height from from which a body is released from rest if its velocity just before hitting the ground is30m\s
Answer:
height = 45 m
Explanation:
Initial velocity = 0 m/s
Final velocity = 30 m/s
Acceleration due to gravity = +10m/s^2 ( because ball is going down )
Using the eqn of motion
[tex] {v}^{2} - {u}^{2} = 2gh[/tex]
where v= final velocity ; u = initial velocity ; g = acceleration due to gravity ; h = height
So,
[tex] {30}^{2} - {0}^{2} = 2 \times 10 \times h[/tex]
[tex] = > 20h = 900[/tex]
[tex] = > h = \frac{900}{20} = 45[/tex]
What is an earthquake
Answer:
When a underground suddenly breaks along a fault it cause vibration it is called earthquake.
What is the acceleration of the box?
Answer:
a=4,32m/s^2
Explanation:
Fnet = F1 - F2
= 12-1.2
= 10.8N
m=2.5kg
Fnet =ma
10.8=2.5a then divide both sides by 2.5 to get acceleration