Answer:
Exposing objects to beams of radiation is called irradiation
Which of the following would be used to measure pressure?A) gramB) newtonsC) kilopascalsD) kilograms
Answer:
C
Explanation:
Pascals are the units for measuring pressure
What is the kinetic energy of a block with a mass of 10 kilograms traveling at a speed of 12 m/s ? Ignore friction
Answer:
Kinetic energy is 720 Joules
Explanation:
[tex]{ \rm{kinetic \: energy = \frac{1}{2} m {v}^{2} }}[/tex]
m is massv is velocity[tex]{ \tt{k.e = \frac{1}{2} \times 10 \times 12 {}^{2} }} \\ \\ { \tt{k.e = 720 \: joules}}[/tex]
Answer:
solution
here,
mass(m)=10kg
speed(v)=12m/s
now,
kinetic energy=1/2mv^2
=1/2 x 10 x (12)^2
=720J
Explanation:
Newton's first law of motion states: Question 1 options: A body at rest will remain at rest unless acted on by an external force. Everything moves. Nothing is at rest Motion is the act of working.
Newtons first law of motion states that a body at rest will remain at rest unless acted upon by an external force and a body in motion will remain in motion unless acted upon by an external force.
Answer: A body at rest will remain at rest unless acted on by an external force.
A woman jogs 10 km in one hour stops at a restaurant for one hour and then walks 10 km in two hours what is her average speed for the outing
Answer:
5km 1 hour
Explanation:
pls help i will be so happy thank you
Answer:
below given.
Explanation:
1) linear/direct
2) Indirect
3) linear/direct
4) quadratic
5) Inverse
6) linear/direct
7) Inverse / Indirect
8) Inverse / Indirect
Can someone pls help me
Answer:
5m/s^2
it's the acceleration formula
what did democritus think about these tiny particals
Which of the following types of mirrors refracts light rays that pass through it outward and away from the optical axis?
convex mirrors
plane mirrors
concave mirrors
All of the choices are correct.
Answer:
convex mirror
Explanation:
A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Convex mirrors reflect light outwards, therefore they are not used to focus light.
The SI base units have the dimensions of: Group of answer choices mass, weight, time length, density, time mass, length, time weight, length, time mass, length, speed
The SI base units have the dimensions of: length, mass and time.
What are SI base units?The SI base units are the internationally accepted system of units of fundamental quantities.
These SI base units consist of system of units of measurement starting with seven base units, which are as follows:
second (s): the unit of time metre (m): The unit of length kilogram (kg): the unit of massampere (A): the unit of electric current kelvin (K): the unit oftemperaturemole (mol.): the unit of amount of substance candela (cd):the unit of luminous intensityLearn more about SI base units
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URGENT PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST !!!
Answer:
Its the third option
Explanation:
U 2 can help me by marking as brainliest........
If you’re going 25M/S in a car for 120 seconds how many meters have you traveled?
Answer:
30 M/S
Explanation:
25×120×÷100 = 30 M/S
Sorry if the answer wrong
i try mu best to help u
tq
IF YOUR GOOD AT SCIENCE THEN PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST
Answer:
This is an open circuit
Explanation:
An open circuit I believe
It needs to be closed for the bulb to be turned on
As an object moves, the distance it travels increases with time. Agree Disagree
Please Help Me! > - <
I know that it is Agree, but I really can't describe why it is agree.
Answer:
Agree
Explanation:
Distance is described as "how much ground an object is covered" in physics, and because the object is moving, no matter which direction, it is constantly gaining more distance. You can think of the object as a car, and as the car is moving down a highway it is gaining more and more distance as the seconds go by.
You might be confused with the term displacement, "how far out of place an object is" which in this case would be false.
Does that make sense?
What is the highest speed that wind can reach in a tornado.
Answer: It is generally believed that tornadic wind speeds can be as high as 300 mph in the most violent tornadoes.
PLZ HURRY!!!
What is the relationship between the calculated momentum and the distance the solo cups traveled?
Answer:
7.8 miles just did it
Explanation:
PLEASE HELP! (I’m in 8th grade so if you could try to make it soils like an 8th grader)
Wave A has a high frequency. Wave B has the same amplitude as Wave A,
but transfers a third of the energy. What can you infer about the relative frequency of Wave B? Explain your answer.
Answer:
Wave A and B have the same pitch, but Wave A is a quieter/softer sound. Wave A and B have the same pitch, but Wave B is a quieter/softer sound. Which sound wave shows the loudest sound?
Explanation:
i tried to help as quick as i could good luck
Scientists are studying a pond. Which property can the scientists measure to understand the amount of energy held by the lake water?
A. the depth of the lake
B. the color of the water
C. the volume of the lake
D. the temperature of the water
a surfer experienced a windy day at the sea, he counted the waves passing by him per min. he counted 20 waves in one minute. can you find out the frequency of the ocean waves at that time?
Which type of relationship is formed when a megabat eats a fig and drops the
fig tree's seeds in a new location?
1) commensal
2) mutualistic
3) parasitic
The type of relationship formed when a megabat eats a fig and drops the seeds in a new location is COMENSALISM. It is an ecological interaction.
What is commensalism?Commensalism is a type of ecological interaction in which one organism benefits (in this case, the tree) and the other organism neither benefits nor harm (the megabat).
Mutualism is a type of ecological association in which both organisms benefit from such interaction.
Conversely, parasitism is a type of ecological interaction in which one organism benefits and the other organism is harmed.
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IF YOUR GOOD AT SCIENCE THEN PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST
The right answer is electric current
If this anser is right pls follow me
When an object moves, stops moving, changes speed, or changes direction, how do scientists describe that condition? Question 1 options: a balanced set of forces unbalanced forces frictional force stable factors.
If an object moves, stops, changes speed, or even changes direction, then that condition represents the unbalanced force condition.
What is Unbalanced Force?The unbalanced force is the magnitude of the net force that tends to cause the motion of objects.
It is nothing but the greater amount of force to be applied to the object to displace the object in either direction.
If an object is moving, stopping, changing the speed, or changing the direction, then such activities directly show that the object is changing its state of motion.
And the change in the motion is only caused when there is some magnitude of force associated with it.
When the magnitude of forces applied on an object such that one force is greater than another in a specific direction, then such forces are known as unbalanced forces.
Unbalanced forces cause motion, which means a body can move, stop or even can change its direction due to the unbalanced force.
Thus, we can conclude that if an object moves, stops, changes speed, or even changes direction, then that condition represents the unbalanced force condition.
Learn more about the forces here:
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3. Find the air temperature if sound travels 205 m in 0.6 seconds
Known :
S = 205 m
t = 0.6 s
Solution :
Sound speed
v = S/t
v = (205 m)/(0.6 s)
v = 341.67 m/s
Air Temperature
v² = γRT
(341.67 m/s)² = (1.4)(286 m²/s²·K)(T)
T = 291.5 K
Will give big prizes !!
Can you guys explain why when mixing warm water with baking soda, it floats an object such as a grape, and when mixing cold water with baking soda, it doesn't float objects such as grapes? Does it have anything to do with particles?
Answer:
it may be because of the movement of the atoms. i believe that the heat of the warm water makes it move faster, thus making the object float due to upthrust, or air pressure
Hello I need help with this science problem
A= N=
Answer:
charge of the atom = -1
charge of the nucleus = 4
An object of mass 0.9 kg is attached to a massless string of length 3 m, and swung with 3 a tangential velocity of 3 m/s. What is the force exerted by the string on the object?
a. 32 N
b. 27 N
C. 5 N
d. 2.7 N
Answer:
d
Explanation:
you have to divide by the square root and then use the factorial to multiply
The force exerted by the string on the object will be 2.7 Newton.
What is the formuala to calculate the centripetal force?
The formula to calculate the centripetal force is as follows -
F[C] = mv²/r
Given is an object of mass 0.9 kg is attached to a massless string of length 3 m, and swung with a tangential velocity of 3 m/s.
The force exerted by the string on the object will be equal to the centripetal force acting on the object. In order to make a body perform circular motion about any center point, a centripetal force is needed, which is directed towards the center of the circle formed due to the circular motion. Therefore -
F[C] = mv²/r
F[C] = 0.9 x 3 x 3 / 3
F[C] = 2.7 Newton
Therefore, the force exerted by the string on the object will be 2.7 Newton.
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A concave mirror has a center of curvature of 24.0 cm. An object 2.5 cm tall is placed 40.0 cm in front of the mirror.
a) At what distance from the mirror will the image be formed?
Hope you could understand.
If you have any query, feel free to ask.
Answer:
17 1/7 cm ≈ 17.1 cm in front of the mirror
Explanation:
You want the location of the image formed of an object placed 40.0 cm in front of a concave mirror with radius of curvature 24.0 cm. The object is 2.5 cm tall.
a) Image locationFor a spherical concave mirror with radius of curvature r, the relationship between the distance from the mirror to the image (i) and the distance from the mirror to the object (o) is ...
2/r = 1/i +1/o
Solving for i, we get ...
i = 1/(2/r -1/o) = 1/(2/24 -1/40) = 120/7 = 17 1/7 ≈ 17.1 . . . . cm
The image will be formed about 17.1 cm in front of the mirror.
__
Additional comment
The magnification is -i/o = (-120/7)/40 = -3/7. The image height is about -15/14 ≈ -1.07 cm. The minus sign means the image is inverted with respect to the object.
The actual formula uses 1/f where f is the focal length. The "small angle approximation" for a spherical mirror says f = r/2, so 1/f = 2/r.
The attachment shows calculation of the image height as well as its location.
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Calculate the atmospheric pressure at the sea level in pascal(pa)(density of mercury =13600Kgm^-3
Hey there ;),
Given:
Density of mercury=13600 kgm^-3
Lets find the atmospheric pressure at sea level in Pascal.
To find atm pressure, apply formula-
Pressure = h×p×g
where height = 0.76 m, p as 13600 kgm^-3 and acceleration due to gravity as 9.8 m/s²
Finding Atm,
Pressure = 0.76×13600×9.8
→ Pressure = 101292.8
→ Pressure = 101293
Therefore, atmospheric pressure is 101293 Pa
Answered by Benjemin
In the same year, the average finishing time for U.S. women was 4 hours and 41 minutes. What was the average female speed in miles per hour?
We have that for the Question "In the same year, the average finishing time for U.S. women was 4 hours and 41 minutes. What was the average female speed in miles per hour?" it can be said that
The average female speed in miles per hour
[tex]V_a=\frac{D}{4.683hours}[/tex]
From the question we are told
In the same year, the average finishing time for U.S. women was 4 hours and 41 minutes. What was the average female speed in miles per hour?
Average speedThis is defined as the collective mean of different travel intervals
Generally the equation for Speed is mathematically given as
V=\frac{Distance}{Time}
Therefore
For 4 hours and 41 minutes=4.683hours
This travels time was obtained over a series of distance
Hence
Distance D
The average female speed in miles per hour
[tex]V_a=\frac{D}{4.683hours}[/tex]
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A baseball with movement lines and a blue arrow pointing down. What force is represented by the vector? friction gravity normal force push.
In the given baseball the blue line represents gravity. Gravitational Force attracts the objects towards the center of the earth.
What is Gravitational Force?It is the force that attracts the objects towards the center of the earth. Every massive object has gravitational force but it is negligible for smaller objects.
Friction force works against the direction of the motion of the objects. The Normal force is the reaction of the gravitational force hence it acts upwards.
Therefore, in the given baseball the blue line represents gravity.
Learn more about gravity:
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Answer:
gravity
Explanation:
got it right
How is the path of the water particles near the water's surface different from the path near the ocean floor?
Answer:
Ocean waves carry huge amounts of energy. The amount of energy can be measured in joules (J) of work, calories (c) of heat, or kilowatt-hours (kWh) of electricity (Table 4.8). The standard measurement of energy in science is the joule.
Explanation:
i think that's the ans but if u dn't want it,it's okay
