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Physics
Physics
College
220 g of water at 90 C is added to a certain unknown mass of water at 10 C The final temperature of the mixture is 33 C. Calculate the unknown mass of the water.
Physics
High School
A ball of mass 1 kg is dropped from a height of 3 m. Assume no air resistance. After it bounces off the ground it only reaches a height of 2 m. What is the change in momentum of the before and after the bounce?.
Physics
High School
PLEASE HELP ASAP, THANK YOU! Why do you think Saturn and Jupiter have more moons than the other planets in our solar system? This is more of an Astronomy question than physics but theres no astronomy option
Physics
College
A 100 N force acts at a 90 degrees and a 60 N force acts at 150 degrees. Determine the magnitude and direction (include angle) of the resultant. Scale is 1cm = 10 NHELPPP ASAPPPPP
Physics
College
Which of the following could be considered inertial frames of reference?1- A train speeding up to 54 m/s2- Both A & C3- A train traveling with a constant velocity of 54 m/s4- A train at rest
Physics
High School
Please help me quickly
Physics
High School
is it safe to drive your 1600-kg car at a speed of 27 m/s around a level highway curve of radius 150 m if the effective coefficient of static friction between the car and the road is 0.40? explain
Physics
College
The radioactive isotope 14C has a half-life of approximately 5715 years. Now there are 50g of 14C.(1) How much of it remains after 1600 years? (Round your answer to three decimal places.) g Tries 0/99(2) How much of it remains after 16000 years? (Round your answer to three decimal places.) g Tries 0/99
Physics
High School
in order to measure the properties of a battery, several resistors are connected to the battery in series and the terminal voltage is measured. in the first case, the resistor has resistance r1
Physics
College
From the third rule you know that if a rope passes over a pulley, the tension in the rope is unaffected. With this observation in mind, what is the magnitude of the tension in the second rope? Add the forces acting on the block to find the magnitude, T2 , of the tension in rope 2
Physics
High School
a merry-go-round is spinning at a rate of 6.06.0 revolutions per minute. cora is sitting 0.50.5 m from the center of the merry-go-round and cameron is sitting right on the edge, 2.0 m from the center. what is the relationship between the rotational speeds of the two children?
Physics
High School
If the distance between us and a star is doubled, with everything else remaining the same, the luminosity.
Physics
High School
An in-line skater first accelerates from 0.0m/s to 5.0m/s in 4.5s, then continues at this constant speed for another 4.5 s. What is the total distance by the in line skater
Physics
High School
A ball is rolling down a hill with an acceleration of 7 m/s^2. The ball has a mass of 10 kg. How much force will the ball apply to a car if it hits a parked car at the bottom of the hill?
Physics
College
Do two bodies have to be in physical contact to exert a force upon one another?a) No, the gravitational force is a field force and does not require physical contact to exerta force.b) No, the gravitational force is a contact force and does not require physical contact toexert a force.c) Yes, the gravitational force is a field force and requires physical contact to exert a force.d) Yes, the gravitational force is a contact force and requires physical contact force to exerta force
Physics
High School
A gas-filled balloon is submerged in a fluid. As a result, the balloon is subject to inward forces from all sides. How does the volume of the balloon change?.
Physics
High School
Now let's see what the face of the Moon looks like from the Earth over the course of a month. Change the date to March 7, 2008, at 6:00 AM. Find the Moon and zoom in until it fills the screen (you can do this by simply using the zoom feature. You should be looking at the face of a dark moon. To understand why the Moon is dark at this moment, zoom out until the FOV is about 5. You should now be able to see both the Sun and the Moon on the screen. Why is the Moon dark at this moment? Would you be able to see the Moon if it was in this phase? What is this phase of the Moon called? Now zoom back out until the (dark) Moon fills the screen again. Change the hour to advance time and watch as the hours and days pass. What happens to the Moon? . Stop time when the Moon is half illuminated. What is the date? . This phase of the Moon is called First Quarter. How many days have passed since New Moon? Advance time again to answer the following questions What date is it? What phase of the moon is it? . D How many days have passed since the First Quarter Moon? How many days have passed since the New Moon? What day is it? What phase of the moon is it?
Physics
High School
explain why calculating height from bone length is useful to a forensic pathologist
Physics
College
A 4.5-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon when the sun is 20 above the horizon.Part AHow deep is the pool?
Physics
High School
A motorbike covered a displacement of 20 kilometers West in 30 minutes. Calculate itsaverage velocity in km/h.
Physics
College
When exercising in the heat, you should __________. A.wear tight-fitting clothes to absorb your sweatB.dress in layersC.choose dark colored clothingD.vary the intensity and duration of the exercisePlease select the best answer from the choices provided.
Physics
High School
students in a technology class are racing cars propelled by carbon dioxide cartridges. a burst of gas is released when the seal of the cartridge is broken, and this propels the car down the track. the cartridges are designed to provide a certain impulse. use the concepts of impulse and momentum to explain why such a cartridge will propel a lighter car to a higher speed.
Physics
College
A pot holds water. The water and pot and air are all at the same temperature, therefore no heat is being transferred. Which law of thermodynamics supports this statement?
Physics
High School
Ima Stomaksic is walking from lunch to her PE class. She exits the lunchroom and walks 43m west. She then turns and walks 72m north down the hallway leading to the locker room. Determine the magnitude and direction of Ima's resultant displacement, and the angle of the displacement.
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