Strictly speaking, as more and more skyscrapers are built on the surface of Earth, does the day tend to become longer or shorter? And, strictly speaking, does the falling of autumn leaves tend to lengthen or shorten the 24-hour day? What physics principle supports your answers?

Q: 2. A satellite of mass m is in an elliptical orbit around the Earth, which has mass Me and radius…

A:

Q: An object thrown horizontally from a 1.0-m height will follow a semi-parabolic path. How will the…

A: Given data: Height h =1.0 m Acceleration due to gravity =0 m/s2

Q: Calculate the angular momentum (in kg · m2/s) of Mars in its orbit around the Sun. (The mass of Mars…

A: m=Mass of Mars=6.42×1023 kgr=Radius of orbit=2.279×1011 mT=Orbital period=1.88 yearsR=Radius of…

Q: The first artificial satellite to orbit the Earth was Sputnik I, launched October 4, 1957. The mass…

A:

Q: A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If…

A:

Q: Starting from Newton’s law of universal gravitation, show that for a small object of mass m in a…

A:

Q: Astronomy: As you go from the equator of the Sun northward or southward, the period of the Sun's…

A: As one goes from equator of the sun towards it's poles,the rotational speed decreases.This…

Q: A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What…

A: Escape speed can be defined as the minimum speed needed for non- propelled object to escape from the…

Q: Describe how to change from degrees to radians, and from radians to revolutions.     A motorcycle…

A: Write the given values with the suitable variables. ωi=2000 rpm=200060 rps=33.33 rpsωf=11000…

Q: (a) Calculate the work (in MJ) necessary to bring a 104 kg object to a height of 991 km above the…

A: Given data: a). The mass, m2=104 kg The height, h=991 km

Q: (a) What angle in radians is subtended by an arc 1.50 m long on the circumference of a circle of…

A: NOTE: According to the guidelines, we can only solve one question per post. If you want the answers…

Q: An astonaut stands on the surface of the moon.  If the astronaut has a  mass of 86.0 kg what is the…

A: Given,

Q: Estimate the kinetic energy of the Mars with respect to the Sun as the sum of the terms, that due to…

A: Answer    Given mass m =6.4×1023kg          radius r =3.4×106m          rotation period…

Q: Assume that the Earth is a perfect sphere which rotates around its axis with constant angular…

A: The point P can be shown as below,

Q: Will two satellites in orbit around the earth with the same specific mechanical energy ()…

A: The mechanical energy of satellite is -2GMe m/r . Where G is gravitational constant and Me is mass…

Q: Mars spins on its axis, one revolution every 24 hours and 39 minutes. Assume Mars is a perfect…

A: Assume the planet Mars is a perfect sphere and spin about its own axis. The mass of the Mars is m =…

Q: Newton’s first law states that objects with more mass have stronger tendencies to maintain their…

A: for linear motion,acceleration , a=Fmso for same amount of force F,a is small for larger masses⇒its…

Q: (a) State Newton's law of gravitation in word form. (b) Use the law to show that that the escape…

A:

Q: A wheel on a tractor has a 32-inch diameter. How many full revolutions does the wheel make if the…

A: Given data:  Diameter (d) = 32 inch Total distance traveled (d) = 7 miles Required: Number of…

Q: Compare the kinetic energy, potential energy and the total mechanical energies of planet A with

A: M is mass of sun in equations .

Q: Suppose one of the Global Positioning System satellites has a speed of 4.34 km/skm/s at perigee and…

A: Given - speed of satellite v1= 4.34 km/s at perigee. Speed at apogee v2 = 3.20 km/s Distance from…

Q: An earth satellite has an apogee of 40,000km and a perigee of 6,600 km. Assuming the radius of the…

A: Apogee is the farthest position where as perigee is the nearest position of satellite. Using…

Q: An object can no longer stay moving in a circle because.....?

A: Circular motion requires a net centripetal force. Without a net centripetal force, an object cannot…

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.