A gauge of how exact a measurement is called
What angle can you kick a football that will make the initial vertical component of the velocity equal to the initial horizontal component of the velocity?
Trigonometry allows finding the result for the angle for which the components of the velocity are equal is:
The angle is: θ = 45º
Trigonometry allows you to find the component of the vectors with the relationships.
[tex]cos \theta = \frac{v_x}{v} \\sin \theta = \frac{v_y}{v}[/tex]
vₓ = v cos θ
[tex]v_y[/tex] = v sin sin θ
Indicates that the values of the two components are equal therefore.
[tex]v_y = v_x[/tex]
sin θ = cos θ
The only angle where the sine and cosine values are equal is 45º
In conclusion using trigonometry we can find the result for the angle for which the components of the velocity are equal is:
The angle is: θ = 45º
Learn more here: brainly.com/question/20261153
Two boxes are suspended from a rope over a pulley. each box has weight 50 n. what is the tension in the rope
Why is declaring faith the first of the five pillars of Islam?
The philosophy is
simple that no one can start the journey towards being a Muslim unless he
professes the basic principles mentioned in the "Declaration of
Faith", which is "“There is none worthy of
worship but Allah and Muhammad is His Messenger”.
The declaration consists of the two most fundamental elements of Islamic ideology:
1) Unity of Allah: Declaring that there is only One God and none else is mandatory
to be a Muslim.
2) Faith in the prophet hood of Muhammad, the messenger of Islam.
A car is traveling at an average speed of 12m/s for 7.2 hours. How far did the car travel
An object has a mass of 15 kg and is accelerating to the right at 16.3 m/s2. The free-body diagram shows the horizontal forces acting on the object.
What is the frictional force, Ff, acting on the object?
5.5 N
15 N
244.5 N
494.5 N
Answer :
5.5 N
Answer:
Ff = 5.5 N
Explanation:
Given:
M: 15kg
A: 16.3 m/s2
We use:
[tex]f=ma[/tex]
force=mass*acceleration
[tex](15kg)(16.3m/s^{2} )=244.5N[/tex]
This means that 244.5 N is the net force on the object, and the right vector is showing 250 N, so to find the left vector - which would be a negative number (left direction) - we do
[tex](-Ff)+250N= 244.5N (net force)[/tex]
Which would give us 5.5 N in the left direction (Ff)Hope This Helps!
What are the three pins that may be worn below your name on the ffa jacket?
When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 4.6 m/s2 as it slows from 9.5 m/s to 0 m/s.
Find the time interval of acceleration for the bus.
Answer in units of s.
Final velocity = Vf=0
Initial velocity = Vi = 9.5m/s
Acceleration = a = -4.6m/s²
Time = t =?
Now use the formula;
Vf=Vi+at
0=9.5 - 4.6m/s²t
-9.5 = -4.6m/s²(t)
9.5/4.6 = t
T= 2.01s
If the voltage is 120 v, and the desired current is 5 a, what resistance must be in the circuit?
Using Ohm's Law, the resistance required in a circuit with a voltage of 120 volts to achieve a current of 5 amps is calculated to be 24 ohms.
To determine the resistance that must be in the circuit when the voltage is 120 volts, and the current is 5 amps, you can use Ohm's Law.
Ohm's Law states that V = IR, where V is the voltage, I is the current, and R is the resistance. You can rearrange the equation to solve for resistance: R = V/I.
Plugging the given values into this formula:
Voltage (V) = 120 volts
Current (I) = 5 amps
Resistance (R) = V/I = 120V / 5A = 24 ohms.
Therefore, the circuit must have a resistance of 24 ohms to achieve a current of 5 amps with a voltage of 120 volts.
A cyclist travels for 30 min with an average speed of 10km/h. How far does she travel?
Answer:
5 km
Explanation:
Hello
speed is the relationship between a travel length and the time taken for it,and the equation is given by
[tex]V=\frac{displacement(d)}{time\ used\ for\ do\ that\ displacement(t)}\\\\ V=\frac{d}{t}[/tex]
Step 1
the speed and the time are known data, so we have to isolate the displacement
[tex]v=\frac{d}{t}\\d=v*t[/tex]
Step 2
same units of time must be used, hence
using a rule of three let's convert 30 min into hours
[tex]1\ hour = 60\ minutes\\x? hours= 30\ min\\\frac{1\ hour}{60\ minutes}=\frac{x}{30\ minutes } \\ x=\frac{1\ hour*30\ minutes}{60\ minutes}\\x=0.5\ hours\\[/tex]
Step 3
Put the values into the equation
[tex]d=v*t\\d=10\frac{km}{h}* 0.5\ h\\\\ d=5 km[/tex]
he traveled 5 kilometers
Have a good day
Which statement best compares the properties of compounds and elements that the compounds contain?
A.They are always identical.
B.They are different.
C.They are similar.
D.They represent opposite characteristics.
What's the momentum of a 3.5-kg boulder rolling down hill at 5 m/s
When jogging outside you accidently bump into a curb. Your feet stop but your body continues to move forward and you end up on the ground. Which law of motion is being described in this scenario?
PLEASE HELP ME WITH THIS SCIENCE QUESTION!!! 12 points plus brainliest!!!
Select all that apply.
Which of the following are density labels? (you can pick more then one!)
kg/L
g/m
g/mL
cm^3/g
Answer:
The correct options are kg/L and g/mL
Explanation:
The formula for density can be expressed as
Density = mass ÷ volume
where the mass can be in grams (g) or kilograms (kg) and the volume can be in cubic centimeter (cm³) or liter (L) respectively.
It should be noted that cubic centimeter (cm³) and milliliter (mL) have the same value. Liter (L) and cubic decimeter (dm³) have the same value also.
Hence, the units for density can be Kg/L or Kg/dm³, g/mL or g/cm³
From the above, it can be noted that kg/L and g/mL are the only correct options provided.
Two technicians are discussing magnetic coils. technician a says that the magnetic force can be increased by increasing the number of windings in the coil. technician b says that won't help because adding windings also increases the length of the wire, so current flow will go down and the magnetic strength will be the same. who is correct.
What is the relationship between temperature and depth inside earth is this relationship the same for pressure?
The outermost shell is referred to as the __________ shell. the electrons in the outermost shell are also referred to as the ____________ electrons.
A golfer, standing on a fairway, hits a shot to a green that is elevated 7.67 m above the point where she is standing. if the ball leaves her club with a velocity of 38.0 m/s at an angle of 33.9 ° above the ground, find the time that the ball is in the air before it hits the green.
Final answer:
To find the time the golf ball is in the air before hitting the green, analyze the vertical component of the initial velocity to calculate the time of flight, which is around 3.44 seconds.
Explanation:
The time that the ball is in the air before it hits the green can be calculated using the vertical motion of the ball.
By analyzing the vertical component of the initial velocity, you can determine the time of flight using the equation for motion under gravity.
In this case, the time the ball is in the air is approximately 3.44 seconds.