Mechanics | Relativity Answers

what is the pressure that an object exerts on the floor that has a weight of 500N and and area of .001m squared?

when two bodies move towards each other the distnc btween thm diminishes by 16 m in 10 s. If the bodies move in the same dirctn thd distnc btwn them inareases by 3m for 5 s. Find their velocity.

In determining the specific heat of a new metal alloy 150 gm of substance is heated to 400 degree C and then placed in a 200 gm calorimeter cup containing 400 gm of water at 10 degree C. IF the final temperature of mixture is 30.5 degree C, What is the specific heat of alloy?

A bird flies in the east direction with a speed of 5 ms−1. The wind is blowing towards north at a
speed of 3 ms−1. Determine the relative velocity of the bird with respect to the wind. Draw
appropriate diagram for solving the problem.

A woman stands on a scale in a moving elevator. Her mass is 53.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9860 N. What does the scale read during the acceleration?

Hello! If you could please explain and solve these problems it would be very much appreciated!

1. A 4.0 kg cart has a force of 20.0 N pushing East and a force of 5.0 N pushing west. The initial speed of the cart is 20. m/sec. At time = 12.0 sec, what will Vf and (delta)X be?

2. A 200kg person is standing on a bathroom scale inside an elevator that is accelerating up at 2.5 m/s^2. What will the bathroom scale read? How far will he travel in 1.5sec?

Given: G = 6.67259 × 10−11 Nm2/kg2 .
A 1340 kg geosynchronous satellite or-
bits a planet similar to Earth at a radius
1.97 × 105 km from the planet’s center. Its
angular speed at this radius is the same as the
rotational speed of the Earth, and so they ap-
pear stationary in the sky. That is, the period
of the satellite is 24 h .
What is the force acting on this satellite?
Answer in units of N
012 (part 2 of 2) 10.0 points
What is the mass of this planet?
Answer in units of kg

A coordinate system (in meters) is con-
structed on the surface of a pool table, and
three objects are placed on the coordinate sys-
tem as follows: a 1.5 kg object at the origin,
a 2.9 kg object at (0 m,2.4 m), and a 4 kg
object at (3.5 m,0 m).
Find the resultant gravitational force ex-
erted on the object at the origin by the other
two objects. The universal gravitational con-
heath (jh56532) – Circular Motion – suarez – (A2111) 2
stant is 6.672 × 10−11 N · m2/kg2 .
Answer in units of N
014 (part 2 of 2) 10.0 points
At what angle does it act with respect to
the positive x axis? Let counterclockwise be
positive, within the limits of −180 to 180.
Answer in units of

The period of the earth around the sun is
1 year and its distance is 150 million km from
the sun. An asteroid in a circular orbit around
the sun is at a distance 259 million km from
the sun.
What is the period of the asteroid’s orbit?
Answer in units of year
010 (part 2 of 2) 10.0 points
What is the orbital velocity of the asteroid?
Assume there are 365 days in one year.
Answer in units of m/s

what happened to the kinetic energy of a bullet when it penetrates the target?