Answer:
Sexually transmitted diseases are spread by direct contact with bodily fluids.
Explanation:
if you have a disease you can give it to someone by having sex because your fluids go into or either combine
Answer:
B
Explanation:
A 15 kg ball is launched forward from a height of 25 m. What is the net force of the ball
Answer:
147 newton.
Explanation:
Force is the product of mass and acceleration. The formula of force is given below: Force = mass x acceleration, but due to height we put gravity instead of acceleration. So by putting values of mass i. e. 15 kg and gravity i. e. 9.8 meter/ second in the formula we get the net force of the ball which is 147 newton or 147 kg meter/second square.
23
You might have noticed that a feather falls slowly toward the ground, while a ball falls rapidly.
Which statement correctly explains the motion of these objects?
A. The ball does not experience fluid friction as it falls
B. Gravity is the only force acting on the feather and the ball
C. The feather experiences more fluid friction than the ball
D. The acceleration of the ball and feather are the same
What is the SPEED of a ball that travels 120 m in 6s?
Answer:
20m/second
Explanation:
The reason the answer is 20m/second is because to find the speed of the ball in this question you have to divide the distance over the time giving you the result of 20m/second
Which of the following is extrusive? Lava, Magma, Laccolith, Batholith.
Answer:
lava
Explanation:
B. A car is moving 4.0 m/s to the right. The car begins to accelerate at a rate of 1.5 m/s/s, to the right. After
10 seconds, what will be the velocity of the car? For credit, show work in detail
8. A hiker walks 2.3 km east and then 4.1 km north. What is her displacement?
A. 6.4 km
B. 6.4 km at 45°
C. 4.7 km at 61°
D. 4.7 km at 29°
100 points to whoever can help, please
A 52-kg snow skier is at the top of a 245-m-high hill. After she has gone down a vertical distance of 112 m, what is her total energy?
a. 125 kJ
b. 1430 kJ
Selected: c. 570 kJThis answer is incorrect.
d. 13 kJ
Answer:
A) 1.2x10^5 J
Explanation:
A Net Force Of 60 N Accelerates A 4-kg Mass Over A Distance Of 10 M.
A) What Is The Work Done By This Net Force?
B) What Is The Increase In Kinetic Energy Of The Mass?
The work done by the force sill be 600 joules and the increase in kinetic energy will be same as 600 joules.
What is Work done in Physics?Work done by a force is defined as the dot product of the force and the displacement caused by it. Mathematically -
W = F . d
W = |F| x |d| x cos Ф
Given is net Force Of 60 N that accelerates a 4 kg Mass Over A Distance of 10 meter.
We can calculate the work done by the formula discussed above. Therefore -
W = F . d
W = |F| x |d| x cos(0)
W = 60 x 10
W = 600 joules
Now, using the work - energy theorem, the change in kinetic energy is equal to work done. Therefore -
ΔE[K] = W = 600 joules
Therefore, the work done by the force sill be 600 joules and the increase in kinetic energy will be same as 600 joules.
To solve more questions on work done, visit the link below-
https://brainly.com/question/13865035
#SPJ2
You do work when you shovel your driveway. If you use a snow blower, is the work done more, less or the same? Explain.
Answer:
i would say either more or the same
Explanation:
9.
A constant mass of hydrogen occupies a volume of 4.0 cm at a pressure of 2.0 x 105 Pa
and a temperature of 288K. Calculate the volume of this gas at a pressure of 1.6x 105 Pa
when the temperature is 125K.
(3mks
Answer:
Approximately [tex]2.2\; \rm cm^{3}[/tex] (assuming that this gas is ideal, and that the initial volume of this gas is [tex]4.0\; \rm cm^{3}[/tex].)
Explanation:
In this question, both the pressure on the gas and the temperature of the gas have changed. However, the ideal gas laws (Boyle's Law and Charles' Law) requires that only one of the two quantity change at a time. Therefore, consider this change in two steps:
Change pressure from [tex]P_0 = 2.0 \times 10^{5}\; \rm Pa[/tex] to [tex]P_1= 1.6 \times 10^{5}\; \rm Pa[/tex] while keeping temperature constant at [tex]288\; \rm K[/tex]. Find the new volume [tex]V_1[/tex] using Boyle's Law.After that, keep the pressure the same (at [tex]1.6 \times 10^{5}\; \rm Pa[/tex]) and change the temperature from [tex]T_1 = 288\; \rm K[/tex] to [tex]T_2 = 125\; \rm K[/tex]. Find the final volume of the gas [tex]V_2[/tex] using Charles' Law.Boyle's Law states that for a fixed quantity of some ideal gas, if temperature is held constant, the volume of the gas will be inversely proportional to the pressure on the gas.
Let [tex]V_0[/tex] denote the initial volume of this gas. The question states that at [tex]P_0 = 2.0\times 10^{5}\; \rm Pa[/tex] and [tex]T_0 = 288\; \rm K[/tex], the volume of the gas is [tex]V_0 = 4.0\; \rm cm^{3}[/tex].
By Boyle's Law, if temperature is held constant ([tex]T_1 = T_0 = 288\; \rm K[/tex],) then at [tex]P_1 = 1.6 \times 10^{5}\; \rm Pa[/tex]:
[tex]\begin{aligned} V_1 &= V_0 \cdot \frac{P_0}{P_1} \\ &= 4.0\; \rm cm^3 \times \frac{2.0 \times 10^{5}\; \rm Pa}{1.6 \times 10^{5}\; \rm Pa} \approx 5.0\; \rm cm^{3} \end{aligned}[/tex].
On the other hand, Charles' Law suggests that for a fixed quantity of some ideal gas, if the pressure of the gas is held constant, the volume of the gas will be proportional to the temperature (in degree Kelvins) of the gas.
Let [tex]V_1[/tex] denote the volume of this gas before the temperature change. At [tex]P_0 = 2.0\times 10^{5}\; \rm Pa[/tex] and [tex]T_0 = 288\; \rm K[/tex], previous calculations show that [tex]V_0 = 5.0\; \rm cm^{3}[/tex].
By Charles' Law, if the pressure of this gas is held constant ([tex]P_2 = P_1 =1.6 \times 10^{5}\; \rm Pa[/tex],) then at the new temperature [tex]T_2 = 125\; \rm K[/tex]:
[tex]\begin{aligned} V_2 &= V_1 \cdot \frac{T_1}{T_0} \\ &= 5.0\; \rm cm^3 \times \frac{125\; \rm K}{288\; \rm K} \approx 2.2\; \rm cm^{3} \end{aligned}[/tex].
Therefore, at [tex]T_2 = 125\; \rm K[/tex] and [tex]P = 1.6 \times 10^{5}\; \rm Pa[/tex], the volume of this gas would be approximately [tex]2.2\; \rm cm^{3}[/tex].
Which of the following is something you should do during severe weather?
Answer:
stay in doors and away from the windows
Explanation:
Answer:
During a thunderstorm, you should remain indoors and have a weather radio handy. Your family should be prepared for the possibility of high winds and power failures. Have candles, emergency supplies, food, and water accessible. Some thunderstorms have been known to cause power failures for millions of people at a time. During a severe weather event, the National Weather Service will issue watches and warnings associated with the storm system. A watch means that severe weather may be possible in the near future. You should take precautions during a watch. A warning is issued when severe weather is likely to strike at any moment. All watches and warnings for severe weather should be listened to carefully.
At t = 4.0 s, the elevator door opens and remains open for 5.0 s. The student immediately exerts a larger constant force on the box and the front of the box reaches the elevator door just as it start
to close.
() Calculate the magnitude of the new force that the student exerts.
Explanation:
Given,
mass of block = 30 kg
initial speed = 1.2 m/s
coefficient of friction = 0.20
time for elevator close and opening = 5.0 sec
for t= 0 sec to t= 4.0 sec
acceleration = 0
speed = 1.2 m/s
distance x= vt
at t=4 distance is x=4.8m
for t= 4.0 sec to next 5 second or t= 9.0 sec
the remaining distance for cover is
x= 16-4.8
x=11.2 m
using motion equation
x=vt+1/2at^2
11.2=1.2*5+1/2 0.5aa=0.416 m/s^2
will get brainless if the answer is correct
Answer:
in case of a car crash they will prevent you from flying out of your seat (not litteraly) and keep you safer than what you would be without them!
Explanation:
to keep you safe (simple answer lol)
what is the mass of a person walking at a speed of 0.8 m/s if their momentum is 52.0 kg m/s
Answer:
65 kgExplanation:
The mass of the person can be found by using the formula
[tex]m = \frac{p}{v} \\ [/tex]
p is the momentum
v is the velocity
From the question we have
[tex]m = \frac{52}{0.8} \\ [/tex]
We have the final answer as
65 kgHope this helps you
A person, of weight mg, is standing on a scale in an elevator. What will the
scale read when the elevator accelerates upward?
A. More than mg
B. Less than mg
C. Equal to mg
D. Cannot tell what the scale will read.
more than mg
Explanation:
the pressure
Matching the following terms with their definitions.
Question 1 options:
Biomechanics
SMART Goal
Muscular Endurance
RDA
Aerobic
Isotonic contraction
Overload Principle
Static Stretch
Flexibility
Double Progressive System
Threshold of Training
Anaerobic
Exercise Physiology
Micro nutrients
Isometric contraction
Principle of Specificity
Quackery
Kinesiology
1 RM
Cardiorespiratory Endurance
Intensity
Macro Nutrients
Calorie
Dynamic Stretch
Physical Activity
1.
Using your joints fully through a wide range of motion without injury.
2.
Magnitude of virtuousness of a task.
3.
Movement using the large muscles, includes sports, dance, recreational activity.
4.
Focuses on how physical activity affects body systems.
5.
The most basic law of physical activity.
6.
Using your muscles many times without tiring.
7.
Branch of kinesiology that uses principles of physics.
8.
Performed slowly as far as you can without pain.
9.
Muscles exert force but do not cause movement of a joint.
10.
Muscle contraction that pulls on a bone and produces movement of a body part.
11.
Slow movement exercises designed to lengthen the muscles.
12.
Unit of energy or heat that describes the amount of energy in a food.
13.
Absolute strength
14.
The type of exercise you preform determines the type of benefits you receive.
15.
Minimum amount of nutrient necessary to meet the health needs of most people.
16.
Minimum amount of overload you need on order to build physical fitness.
17.
Physical activity that can be sustained for a long time because the body can supply enough oxygen.
18.
When you body cannot supply adequate oxygen to sustain it for a long time.
19.
The study of human movement.
20.
Carbohydrates, Fats, & Proteins
21.
Vitamins, minerals, & water
22.
Exercise for a long time without stopping.
23.
Specific, measurable, attainable, realistic, & timely.
24.
The most used method of applying the principle of progression.
25.
Advertising or selling that uses false claims.
Answer:
Explanation:
Biomechanics- The study of human movement.
SMART Goal- Specific, measurable, attainable, realistic, & timely - pay attention the how the words start this one was an easy giveaway
Muscular Endurance- Physical activity that can be sustained for a long time because the body can supply enough oxygen.
John is a runner. He runs the 100m sprint in 10.6s. What speed did he travel at? (in m/s)
The answer you are looking for is approximately 9.4 m/s.
Solution/Explanation:
First, writing out the formula for the speed of an object, encompassing distance and time, in meters per second, or m/s,
S=D/T.
"S" stands for "Speed."
"D" stands for "Distance."
"T" stands for "Time."
Speed (S)=????
Distance (D)=100m.
Time (T)=10.6s.
Substituting the given values of the variables,
S=100m/10.6s.
100÷10.6=9.43396226415≈9.4.
So, therefore, the final answer is approximately 9.4 m/s.
I hope that this has helped answer your question. Good day to you.
why is it important to include variety in your workouts
Explanation:
Variety in to an exercise program allows the body to adapt to many demands, from high intensity exercise to slow, steady state exercise. Variety is important in a fitness program because it allows for your body to be challenged on a consistent basis and to overcome a plateau.
Find the speed of a wave with wave length 650 M and a frequency 35HZ
help.
Answer:
option A
Explanation:
wave speed= 650×35= 22750 m/s
hope it helps !
Answer:
option is the correct answer mark me as a brain list pls
Which statements about carbon-14 dating are true? Check all that apply. Carbon-14 decays into nitrogen-14. Carbon-14 has a longer half-life than potassium-40. Once a living thing dies, it no longer takes in carbon. Carbon-14 dating is used to date very old volcanic rock. Carbon-14 dating works for fossils as old as 50,000 years.
Answer:
135
Explanation:
A baseball is thrown at an angle of 22◦ relative to the ground at a speed of 24.8 m/s. The ball is caught 43.5518 m from the thrower. The acceleration due to gravity is 9.81 m/s^2
How long is it in the air?
Answer in units of s.
How high is the tallest spot in the ball’s path?
Answer in units of m
Answer:
12 seconds in the air
2.5
very high
132
Explanation:
What is the value of x in the equation 8+ 4 = 2 (x-1)
Answer:
mgi
Explanation:
Answer: x = 7
Explanation: 12 = 14 -2 = 12.
A dog walks a distace of 100 ft in 20 s of time. What is the dogs speed in feet per second
Answer:
5 sec
Explanation:
Suggest a measure that a government can take to reduce a country's energy use
Answer:
Using alternative sources of energy like solar power,wind powermake aware people about using less energyconduct more hydroelectricity projectshow does the electric force between two charged particles change if the distance between them is decreased by a factor of 3?
Answer:
F' = 9F
Explanation:
The electric force between charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
It means,
[tex]F\propto \dfrac{1}{r^2}[/tex]
If distance decreased by a factor of 3, r' = r/3
Net force will become,
[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\=9\dfrac{kq_1q_2}{r^2}\\\\=9\times F[/tex]
It means new force will become 9 times that of the initial force.
Answer:
it is increased by a factor of 9
Explanation:
just took the test
A student is using a 68 ohm resistor to build a circuit with a voltage source. If the student
needs 0.72 amperes of current to flow through the resistor, what voltage should be used?
Answer:
48.96V
Explanation:
Given parameters:
Resistance = 68Ω
Current = 0.72A
Unknown:
Voltage = ?
Solution:
According to ohm's law;
V = IR
V is the voltage
I is the current
R is the resistance
Now insert the parameters and solve;
V = 68 x 0.72 = 48.96V
What is the voltage required to move 3A through three resistors (2ohms, 3ohms & 5ohms)?
How much does a 44 kg child weigh on Earth?
Answer:
96.8 or 97 pounds if you need to round
Explanation:
To convert kilograms to pounds you multiply the kilogram with 2.2. So 44kg × 2.2 equals to 96.8 but if you round it turns to 97.
______ atoms do not easily react with or
form bonds with other atoms.
Answer:
the Noble gases
Explanation:
the Noble gases are atoms that do not easily react with or form bonds with other atoms
Plz help me find the answers
Answer: Plastids are the site of manufacture and storage of important chemical compounds used by the cells of autotrophic eukaryotes
Explanation:
Answer:
Plastids: any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.
Explanation:
Could be that?