Other Physics Answers

A book is sitting on your desk. What is the normal force of the book that has a weight of 35kg?

Group of answer choices

343N

343 lb

3.57 N

0 N

a race car accelerates uniformly from 18.5m/s to 46.1m/s in 2.47 seconds. Determine the acceleration of the car and the distance traveled

two gliders with different masses move toward each other on a frictionless air track. after they collide, glider b has a final velocity of 2m/s. the gliders are equip so that they stick together when they collide. find the common final x-velocity and compare the initial and final kinetic energies of the system.

Three balls are attached to a cable and are being rotated. Ball (A) is 0.5 kg and is 1.0 meter away from the axis of rotation. Ball (B) is 1.0 kg and placed 0.8 meter away from the axis. Ball (C) which is 0.5 meter away from axis.

The length of a bicycle pedal arm is 0.142m, and a downward

Force of 111N is applied to the pedal by the rider's foot. What is the magnitude of the torque about the pedal arm pivot when the arm makes an angle of

(A.) 30°

(B) 90°

(C.) 180°

With the vertical?

The diameter d, of a wire is (0.56m 0.01mm) if it's cross sectional area A is given by m², calculate the following; I)The maximum fractional uncertainty in A (ii) maximum uncertainty in A (iii) cross sectional area of the wire.

you are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating how much weaker gravity is 250 km

km above the Earth's surface.

Δg/g=?

The space shuttle releases a satellite into a circular orbit 630 km

km above the Earth.

How fast must the shuttle be moving (relative to Earth's center) when the release occurs?

Two objects attract each other gravitationally with a force of 2.0×10⁻¹⁰ N

N when they are 0.22 m

m apart. Their total mass is 4.50 kg

kg . Find their individual masses.

m

mlarger =? msmaller?

5. a) Define viscosity.

b) A matter has a body-centered cubic unit cell with a length of 330 𝑝𝑚 along an edge

and a density of 8.57 𝑔 𝑐𝑚−3

. Calculate the atomic mass of the matter.

c) Find the total energy of a moving object of mass 6.3 𝑘𝑔 and momentum

11.5 × 106 𝑘𝑔𝑚𝑠

−1