Physics, 09.02.2021 18:50 aletadaboss
POSSIBLE
A 5-kg object is moving at 20 m/sec. Which of these would increase the kinetic energy the most?
Doubling the mass of the object
Doubling the speed of the object
Doubling the volume of the object
Answers: 3
Physics, 21.06.2019 18:10
An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.
Answers: 2
Physics, 22.06.2019 12:00
Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?
Answers: 3
Physics, 22.06.2019 20:40
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
Answers: 2
POSSIBLE
A 5-kg object is moving at 20 m/sec. Which of these would increase the kinetic energy the...
Geography, 16.02.2021 14:00
History, 16.02.2021 14:00
Mathematics, 16.02.2021 14:00
Geography, 16.02.2021 14:00
Mathematics, 16.02.2021 14:00
Mathematics, 16.02.2021 14:00
Mathematics, 16.02.2021 14:00
World Languages, 16.02.2021 14:00
French, 16.02.2021 14:00
Biology, 16.02.2021 14:00
Business, 16.02.2021 14:00
Computers and Technology, 16.02.2021 14:00