Answers
Answer:
Explanation:
If no one can see it because the lights were out. Did the flea really jump?
What do you want here?
Max height (2.2sin21)²/ 2(9.8) = 3.2 cm
Time of flight 2(2.2sin21)/ (9.8) = 0.16 s
distance of flight (2.2cos21)(0.16) = 33 cm
Related Questions
Pls help need asap thank u!
Answers
Answer:
c
Explanation:
How can people reconcile technology with environmental preservation?
Answers
- Efficient energy storage and smarter grids .
- renewable and rechargeable batteries and fuel cell
2. Saving endangered wildlife
-smart collars for endangered species and reducing human - animal conflict
-Gene sequencing for detecting and researching on deadly animal diseases.
3. Adopting a smarter lifestyle
- smart homes that promote energy saving and green - living .
- electric cars which are three times more conventional vehicles .
Hope this helps :)
Pls help and thank u need asap!
Answers
Answer:
ill help if u help me?its 4am
A mini car of mass 750kg has a head on collision with suv of mass 1200kg traveling at 40m/s.Both cars stop dead.How fast was the mini car traveling
Answers
Answer:
Explanation:
Conservation of momentum
Final momentum is zero
1200(40) + 750v = (1200 + 750)(0)
v = - 1200(40)/750
v = - 64 m/s
The negative sign means the mini car was traveling in the opposite direction of the SUV
A 500-kg golf cart is moving on level ground in a circular path of radius 10 m with a speed of 12 m/s. What is the centripetal force acting on the cart?
Answers
Answer:
7200N
Explanation:
Centripetal force is directly proportional to the product of the mass and the square of the velocity and inversely proportional to the radius given.
A cabinet weighs 98N. What is the mass of the cabinet in kilogram?
Note: No need to write the units in your answer. Just the number only.
Write your solution and answer with units in your science portfolio.
Formulas: m=w/g: or w=mg
Answers
Answer:
the answer to ur questioj is 10 kg
Is snowflakes forming in a cloud a chemical or physical change
Answers
Answer:
Physical change.
A snowflake is still considered water whether its liquid or solid.
Answer:
mark me as brainliest !! PHYSICAL CHANGE
Explanation:
A snowflake is composed of ice, which is water in the solid phase. Water is a chemical compound of oxygen and hydrogen atoms.
somebody please help me with this
Answers
Answer:
C.
Explanation:
That is the main part of a cell, apart of the nervous system and controls all the other functions of the cell.
I hope this helped
Brainliest if it did? No pressure!
Have a great day! :D
A race car rounding a corner at a constant speed of 200 miles per hour.
Answers
Answer:
Yes since it is changing direction
Explanation:
A race car rounding a corner at a constant speed of 200 miles per hour
(c) Changing water into vapour is condensation true or false
Answers
Answer:
true
Explanation:
Bob is riding in a roller coaster, and is at the top of a vertical loop (shown below). The radius of the loop is 18 meters. If his apparent weight is just 28% of his actual weight, what is the speed of the roller coaster? Show all your steps.
Answers
0.28mg + mg = ma
0.28g + g = V^2/r
V = ( 1.28 x 9.8 x 18 )^1/2 = 15m/s
relationship between the length (l) and ohmic conductor, its thickness (d) and the opposition (R) it offers a current passage
Answers
Answer:
Ohm’s Law states that current is proportional to voltage; circuits are ohmic if they obey the relation V=IR.
Explanation:
LEARNING OBJECTIVES
Contrast shape of current-voltage plots for ohmic and non-ohmic circuits
when air gets hot, it rises and forms…
Answers
Answer:
Gas
Explanation:
Hot air rises because gases expand as they heat up. When air heats up and expands, its density also decreases.
The lantern rises up because the __________ of the _________inside the lantern is _________ compared to the air around it
liquid
Gas
Density
fire
less dense
the same density
more dense
paper
Answers
Answer:
gass fire and the same density
Explanation:
A baseball is hit straight up in the air with an initial velocity of 38 m/s
How long does it stay in the air?
How high does it go?
Answers
The time of motion or time spent in air by the baseball is 7.76 seconds.
The maximum height attained by the baseball is 73.67 m.
The given parameters;
initial velocity of the baseball, u = 38 m/sThe time of motion of the baseball is calculated using the first kinematic equation as follows;
v = u - gt
where;
t is the time to reach maximum heightv is the final velocity of the ball at the maximum height = 00 = u -gt
gt = u
[tex]t = \frac{u}{g} \\\\\t = \frac{38}{9.8} \\\\t = 3.88 \ s[/tex]
The time spent in the air = time of entire motion = 2(3.88 s) = 7.76 seconds
The maximum height attained by the ball is calculated using the second kinematic equation as shown below;
[tex]h = ut -\frac{1}{2} gt^2\\\\h = (38\times 3.88)\ - \ (0.5 \times 9.8 \times 3.88^2)\\\\h = 73.67 \ m[/tex]
Learn more here:https://brainly.com/question/8599327
What happens to the size of an Object when it is heated ?
Answers
Answer:
size get smaller maybe there is no object remaining
Answer:
If they are heated the size. will be decreased.
What happened to an enzyme’s structure as it exceeds the typical human body temperature
Answers
Enzymes. ... This is because heat energy causes more collisions, with more energy, between the enzyme molecules and other molecules. However, if the temperature gets too high, the enzyme is denatured and stops working. A common error in exams is to write that enzymes are killed at high temperatures.
Which statement is true
1) The phases of the moon are caused because sometimes the moon is in the Earth's
shadow
2) The phases of the moon is a result of the moon shinning different amounts of its own
light
3) We see different phases of the moon because the moon travels along its orbit around
the Earth and see different amounts of the illuminated half
4) We see different phases of the moon because different amounts of the moon is
illuminated by the sun
Answers
Answer:
I think the answer is option 3
in order to keep heat in or out, you need a(n)
Answers
Answer:
What is instillation
Explanation:
part A
Explain how the students can measure the distance the cars travel.
part B
Explain how the students could measure the time it takes the cars to travel the distance you explained in the first part.
Answers
Answer:
Part A: By using the formula, distance = speed x time
Part B: By using the formula, time = distance ( calculated in the first part) ÷ speed
how much work is done by a crane that lowers 1000 N of material a distance of 150 m?
Answers
Answer:
Force= 1000 Newtons. Distance= 150 metres. Work= 150000 Joules. So, the work done by crane that lowers 1000 Newton's of a material a distance of 150 meters is 150000 Joules.
A............... pulley helps us by changing the direction of the applied effort
Answers
Answer/Explanation:
True
A fixed pulley changes the direction of the force you exert by pulling, so you can pull down to move an object up. In this fixed pulley system, you pull down on one side of the rope and the other side goes up. You use the same amount of force to pull down as you would to lift the toy yourself.
PLEASE I NEED HELP WITH 6 and 8 !!!! I will love u sm
Answers
Answer:
Explanation:
006
They are acting in opposite directions. Therefore the net force is found by subtraction. The sign is the same as the larger number.
Net Force = 99.6 - 52.8 = 46.8 N acting in the same direction as the 99.6 which is upward.
008
If the two forces act in the same direction, the net force is found by addition.
Net Force = 99.6 + 52.8 = 152.4 N downward.
Each substance has a unique set of properties that depends on the kinds of atoms it has and how the atoms are connected, or bonded. Bonding is related to the electrons in an atom, and there are different kinds of bonds. As a result, some substances can have the same atoms but different bonds. Substances that are different but have the same atoms are called allotropes. Allotropes have very different properties.
Diamond and graphite are well-known allotropes. Graphite is used in pencils for writing and is sometimes called lead. Diamond is colorless and transparent, and is one of the hardest substances known. Graphite is dark gray and soft. When we write, layers of graphite easily transfer from the pencil to the paper. Although they’re different, diamond and graphite each only contain one kind of atom—carbon.
How do you think the bonds between carbon atoms might be different in diamond and graphite? Use household materials to build physical models to help you develop your ideas. Describe what you learned from your models. What other kinds of allotropes are there? What kinds of properties and atomic bonds do they have?
Answers
Answer:
C - the atom is all about the proton number.
An isotope of an atom is the same element with a different number of neutrons.
Explanation:
Please HELP!!
Diagram's BELOW↓
1. What is the mass of the object experimented on in this situation?
a. 10 kg
b. 15 kg
c. 20 kg
d. 25 kg
2. What is the net force on this object?
a. 20 N to the left
b. 10 N up
c. 10 N down
d. 35 N to the right
Thank you in advance! Very appreciated! (I will mark brainliest) :)
Answers
2. 35n to the right
The mass of the object experimented in the situation will be equal to 20 kg in each case. Hence, option C is correct.
What is Acceleration?Acceleration is the rate at which the speed and orientation of a moving object change over time. When a spot or object moves faster or slower along a straight line, it is said to be accelerated. Even though the speed is constant, motion on a circle accelerates so because the direction is always shifting. Both by and to acceleration for all other types of motion.
It is a vector quantity because it has both magnitude and direction.
The given data as per the question is,
Force, F = 30 N
Acceleration, a = 1.5 m/s²
[tex]Force = mass*acceleration[/tex]
30 N = m × 1.5
m = 30/1.5
m = 20 kg.
Therefore, the mass of the object is 20 kg.
To know more about acceleration:
https://brainly.com/question/12550364
#SPJ2
In 1962 measurements of the magnetic field of a large tornado were made at the Geophysical Observatory in Tulsa, Oklahoma. If the magnitude of the tornado's field was B = 17.50 nT pointing north when the tornado was 9.10 km east of the observatory, what current was carried up or down the funnel of the tornado? Model the vortex as a long, straight wire carrying a current. A (conventional current) flowing ---Direction--- the tornado.
Answers
Answer:
796.25 A
Explanation:
B= (μI)/(2πr)
I= (B*2πr)/(μ)
μ= 4π*10^-7
I= ((17.50*10^-9)(2π)(9.10*10^3)) / (4π*10^-7)
= 796.25 A
A (conventional current) flowing "DOWN" the tornado.
An astronaut standing on a platform on a foreign planet drops a hammer. If the hammer falls 9.0 meters vertically in 2.5 seconds, what is the acceleration due to gravity on that planet?
Answers
Answer: 1.646 m/s²
Explanation:
The distance that is traveled by the astronaut given that the motion is free-fall can be calculated through the equation,
d = Vot + 0.5at²
where d is the distance, Vo is the initial velocity, t is the time, and a is the acceleration. Substituting the known,
6 = (0 m/s)(2.7 s) + 0.5(a)(2.7 s)²
Determining the value of a,
a = 1.646 m/s²
What is 1/3 a millisecond in seconds (decimal form)? (0._ s)
Answers
Answer:
I don't know
Explanation:
plz
plz mark me as brainlist
Two vectors P=40m/s and q=60mls are perpendicular to each other. Calculate the resultant force and the angle resultant make with either vectors
Answers
This question involves the concepts of the rectangular components of the vector and the resultant of the vectors.
The magnitude of the resultant force is "72.11 N", and it makes an angle of "33.7°" from one of the vectors.
The rectangular components of a vector are those components that have a right angle between them. The resultant of two rectangular components of a vector can be found using the following formula:
[tex]F = \sqrt{F_1^2+F_2^2}[/tex]
where,
F = resultant force = ?
F₁ = First component of force = 40 N
F₂ = Second component of force = 60 N
Correction: The unit in question is given as m/s, while the unit of force is N. Hence, N is taken here.
Therefore,
[tex]F = \sqrt{(40\ N)^2+(60\ N)^2}[/tex]
F = 72.11 N
The following formula can be used to find the angle of resultant from 60N vector:
[tex]\theta = tan^{-1}(\frac{40\ N}{60\ N})\\\\[/tex]
θ = 33.7°
Learn more about rectangular components of a vector here:
https://brainly.com/question/14793638?referrer=searchResults
The attached picture shows the resultant calculation for the rectangular components of a vector.
Ex 1) A Major League baseball pitcher throws a baseball straight up into the air and the ball travels for 4
seconds reaching a height of 52 m before returning to the pitchers hand exactly at the height that he released
it. With what velocity does the baseball strike the pitchers hand on the way back down?
Answers
Answer:
52 / 4 = 13 m/s
Explanation: