Reference no: EM13952239
1)Impulse and momentum change/varying force. A 10-kg asteroid is traveling through space at 2 m/s toward a spaceship. To avoid a collision, an astronaut, with the help of a backpack rocket, exerts a force of 20 N on the asteroid in the opposite direction for 5 s.
(a) find the asteroid's final speed?
(b) How long should she have pushed in order to just stop the asteroid?
2) Conservation of linear momentum. A toy cannon having a mass of 4.0 kg sits on a frictionless level surface. It fires a 250-g projectile horizontally and immediately recoils westward at 1.5 m/s. (a) Find the change in momentum of the cannon? (b) Determine the change in momentum of the projectile? (c) What was the muzzle velocity of the projectile?
3)A fireworks rocket rises straight up to its maximum altitude of 50.0 m. At that point it explodes into two equal-mass pieces; one heads straight down at 20.0 m/s, the other travels straight upward. What is the maximum altitude attained by the second upwardly-moving fragment?
4) Collisions> In an arrangement for measuring the muzzle velocity of a rifle or pistol, the bullet is fired up at a wooden mass, into which it imbeds. The wood is blasted straight up into the air to a measured height h. Assuming negligible losses to friction, write an expression for the velocity in terms of the known masses and height. If a 100-grain (6.48-g) 25-06 Remington rifle bullet is fired into a 5.00-kg block that then rises 4.0 cm into the air, what was the muzzle speed of that bullet?
5)A soft clay block is suspended so as to form a so-called ballistic pendulum. A bullet is fired point blank into the block, imbedding itself therin and raising the latter to a height h. Write an expression for the muzzle speed of the bullet in terms of g, h, and the masses. Note that although the friction on the pendulum is negligible, clay-bullet friction losses are not, and mechanical energy is not conserved in the collision.
6)Referring to the above problem, Derive an expression for the percentage of kinetic energy converted into internal energy during the bullet-clay impact.
|
How are eigrp and ospf the same
: Do you disagree with the team leader? Will the client be able to continue to use RIP? If not, what information could impact whether EIGRP or OSPF would best fit the company? How are EIGRP and OSPF the same? How are they different?
|
|
Draw logical circuit for boolean equation
: Draw logical circuit for boolean equation F1=X'.Y'.Z+X'.Y.Z+X.Y'
|
|
Explaining fertility transitions
: Read: Mason, Karen O. 1997. "Explaining fertility transitions," Demography 34(4): 443-54 (JSTOR). Mention a few of the things demographers think they know and a few of the things they don't know about fertility transitions.
|
|
Compute the maximum change in total deposits
: Compute the maximum change in total deposits that would result if deposits at financial institutions were immediately increased by $120 billion and the reserve requirement applicable to all deposits was 5%, 10% 50% 100%
|
|
What was the muzzle speed of that bullet
: Impulse and momentum change/varying force. A 10-kg asteroid is traveling through space at 2 m/s toward a spaceship. To avoid a collision, an astronaut, with the help of a backpack rocket, exerts a force of 20 N on the asteroid in the opposite dire..
|
|
How many flip flops are needed to build a register file
: How many flip flops are needed to build a register file with 32 16-bit registers where register 0 is always 0x0000?
|
|
What is the expected return on a portfolio
: What is the expected return on a portfolio that will decline in value by 13% in a recession, will increase by 16% in normal times, and will increase by 23% during boom times if each scenario has equal likelihood? A. 8.67% B. 13.00% C. 13.43% D. 17.33..
|
|
What additional research do you feel needs to be done
: What research are you familiar with that has already been done on this topic? What additional research do you feel needs to be done? Create a specific research question that you might use to investigate this topic
|
|
Estimate the radius of the asteroid if it has an albedo
: A newly discovered faint asteroid and Mars are observed at opposition. Mars is observed to be 100 million times brighter than the asteroid. Assume Mars and the asteroid are 1.5 and 3.0 AU from the Sun respectively. Estimate the radius of the aster..
|