Answer:
the horizontal distance covered by the cannonball before it hits the ground is 327.5 m
Explanation:
Given;
height of the cliff, h = 210 m
initial horizontal velocity of the cannonball, Ux = 50 m/s
initial vertical velocity of the cannonball, Uy = 0
The time for the cannonball to reach the ground is calculated as;
[tex]h = u_yt - \frac{1}{2} gt^2\\\\h = 0 - \frac{1}{2} gt^2\\\\t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 210}{9.8} }\\\\t = 6.55 \ s[/tex]
The horizontal distance covered by the cannonball before it hits the ground is calculated as;
[tex]X = U_x \times \ t\\\\X = 50 \times \ 6.55\\\\X = 327.5 \ m[/tex]
Therefore, the horizontal distance covered by the cannonball before it hits the ground is 327.5 m
3. A difference between copper and plastic is that copper has a much higher
a
brittleness.
b
solubility.
c
reflectivity.
d
electrical conductivity.
Answer:
d ............................
The photo shows a toy spring. What kind of energy does the toy have because of its shape?
Answer:
elastic
Explanation:
if you stretch it it will go back to its shape, and also it is the only one that makes sense.
Answer:
Elastic
Explanation:
I got it right
Which muscle is the main muscle of mastication?
Answer: Masseter muscle
Explanation:
The masseter muscle is the most powerful muscle of mastication. It is quadrangular in shape and has two parts: deep and superficial. The entirety of the muscle lies superficially to the pterygoids and temporalis, covering them.
Substance A has twice the specific heat capacity as substance B. If 1000 J of heat are added to 1.0 kg of each substance, compare the change in temperature of each substance.
A 10 ohm resistor has 2.5 amps running
through it. What is the voltage?
Answer:
10*2.5=25
Explanation:
The answer is 25 volts
Answer:
25 Volts
Explanation:
2.5 multiplied by 10 is 25.
TRUE or FALSE: An object's weight changes depending on which planet it is located.
A. TRUE
B. FALSE
Answer:
B False
Explanation:
plz correct if im wrong i am 100% sure thx
The answer should be true I hope this helped:)
1. Hearing is also known as
?
The horizontal acceleration of a projectile __
as its position changes.
A. Increases
B. Decreases
C. Is constant
D. Is zero
Definition of reflection(in Integrated Science
ill give brainliest,
Nascar fans love race day when they get a chance to pull for their favorite drive. If a driver was able to travel 600 miles in 3 hours, what was his/her average speed?
Find the force on an object which has a mass of 20 kg and an acceleration of 10 m/s2.
Answer:
200N
Explanation:
mass = 20 kg
acceleration = 10 m/s^2
Force = mass * acceleration
= 20 *10
= 200 N
a bird flaps its wings 8 times per second. what is the frequency of the birds wing flapping?
EXPLAIN
50 POINTS
Answer:
480 flaps per minute
Explanation:
8*60 =480
Answer:
480 flaps per minute
Explanation:
8*60 =480
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List three unique examples of situations in your daily life where expansion and contraction occur.
3. Which of the following has more inertia?
b. Hammer
DI
Feather
Answer:
The Feather.
Explanation:
Inertia depends on the mass of an object.
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions. Online Content: Site 1 Online Content: Site 2 How is coal formed and why is it considered a nonrenewable resource? (Site 1)
Answer:
Coal is fossil fuel extracted from earth and since it takes a long time to replenish, it is called a non renewable source of energy
Explanation:
Coal is formed from the fossil fuel that lie deep beneath the earth crust . These fossil fuels are dead remains of living organism that burried beneath the earth crust million of years ago.
Coal is non renewable because if once it gets depleted it will take a very very long time to replenish.
Answer: Coal is fossil fuel extracted from earth and since it takes a long time to replenish, it is called a non renewable source of energy
Explanation: just did it
Which of the following is true about science and technology?
A.
Advancements in science can lead to advancements in technology, and technological advancements can also lead to scientific advancements.
B.
Advancements in science cannot lead to advancements in technology, but technological advancements can lead to scientific advancements.
C.
Advancements in science can lead to advancements in technology, but technological advancements cannot lead to scientific advancements.
D.
Advancements in science cannot lead to advancements in technology, and technological advancements cannot lead to scientific advancements.
Answer:
1st choice is the true
cause Science and technology are Related Improvement in science is improvement in technology
Help please
Which occurrence would lead you to conclude that lights are connected in a
combined circuit?
A. When one bulb burns out all the lights go out.
B. When one bulb burns out, a circuit breaker is tripped.
C. When one bulb burns out a small section of lights goes out.
D. When one bulb burns out all the other lights stay lit.
Answer:
D
Explanation:
as one burns then all stop simple
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what is the mass of an object if a 30 N force makes it accelerate at 6 m/s2
Answer:
5 kg
Explanation:
Acceleration = 6 m/s^2
Force = 30 N
Force = mass * acceleration
mass = force / acceleration
mass = 30 / 6
mass = 5 kg
The momentum of a 5-kilogram object moving at 6 meters per second is-
The momentum of an object is 30 kgm/s . This can be calculated by using momentum formula see description below.
What is momentum?It is defined as the product between mass and velocity. Its symbol is p.
It is given by:
p = m * v
What information do we have?
Mass = 5kg
Velocity = 6 m/s
To find:
Momentum=?
On substituting the values:
p = m * v
p =5 kg * 6 m/s
p = 30 kgm/s
Thus, the momentum of an object is 30 kgm/s.
Find more information about Momentum here:
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which of the following terms or pair of terms is used to describe how energy flows in a chemical reaction?
A.Conservation of matter
B.Chemical Equation
C.Reactants and products
D.Exothermic and Endothermic
Answer:
D Exothermic and Endothermic
Explanation:
Answer:
D
Explanation:
I just took test
8. What is the length of the diagonal of a 10 cm by 15 cm rectangle?
Answer:
18.03
Explanation:
You use Pythagoras theorem to work out the diagonal
Hope this helps :)
What will the phase of the moon be in the diagram?
PLZ HELP ME I HAVE A TIMER!!!
Plz find the initial value (u)
Thank you soo much!!!
answer:
u =11
Explanation:
brackets were inserted in the 1st step,to make it simpler as multiplication is done first, before addition.
hope this helps:))
What type of system would allow light to enter and exit, but would keep any
additional atoms out?
Answer: it’s closed
Explanation: a pex
40 Newtons
30 Newtons
20 Newtons
10 Newtons
Which statement is TRUE about the picture above?
A
The spheres have only weight but no mass.
B
The 40 Newton sphere has the greatest gravitational force.
The smaller the weight, the greater the gravitational force
D
Although the weights of the spheres are different, the gravitational forces
are the same
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04:04
A car has a momentum of 10,000 kg x m/s and has a mass of 800kg what's the car velocity
Answer:
Explanation:
Momentum P=mass×velocity
1000=800×velocity
1000=800V
V=1000/800=2.5m/s
What moon phase will occur next in the lunar cycle?
Answer: gibbous moon
Explanation:
weehoo giggy sliggy
Answer:
waxing crescent
Explanation:
How does Density depend on the type of object being measured ?
Answer:
ways to exaplined
Explanation:
Density is calculated by
dividing the mass by the volume, so that density is measured as units of mass/volume, often g/mL. If both water samples are at the same temperature, their densities should be identical, regardless of the samples' volume.
What equations would you use to find force?
Answer:
F = m x a
Explanation:
F = force
m = mass of an object
a = acceleration
A 6V radio with a current of 2A is turned on for 5 minutes. Calculate the energy transferred in joules
Answer:
R=V/I=6/2=3ohm
time =5minutes =5*60=300seconds
I=2A
Heat =I^2Rt=(2)^2*3*300=4*900=3600J
We have that Hence,the energy transferred in joules is mathematically given
E=0.04Joules
From the question we are told
A 6V radio with a current of 2A is turned on for 5 minutes. Calculate the energy transferred in joules
Generally the equation for the Power is mathematically given as
[tex]P=IV\\\\P=6*2\\\\P=12W[/tex]
Generally the equation for the Energy is mathematically given as
[tex]E=\frac{P}{t}\\\\E=\frac{12}{5*60}\\\\E=0.04Joules[/tex]
Hence,the energy transferred in joules is mathematically given
E=0.04Joules
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